Answer:
You will live longerIt will reduce risk of cancer, diabetes, and other diseasesIn which layer of the sun do sunspots form?
Answer:
I think it would probably be photosphere.
Explanation:
Answer:
the answer to your predicament is the photosphere, which is like the surface, unlike, the sun's crown, which is what most people think the surface is
true or false the coast is never destroyed by waves
Answer:
false?
Explanation:
anytime a wave hits the shore, it displaces a small amount of sediment, so technically its always destroying it but rebuilding it at the same time.
What makes a resource sustainable
Answer:
The answer is the good use of natural resources.
Explanation:
What makes a resource sustainable, is the sustainable use of these natural resources, which consists in using them in a rational way, conserving the environment in such a way that we can continue enjoying it and taking advantage of it in the future. Protection and harmony with the environment are factors that allow resources to be sustainable, which is important for development and for improving the quality of life of the population.
Proper use, conservation and recycling of resources will ensure that a resource is sustainable.
What are resources?Resources are those materials found in the natural environment used by man to for his immediate use as well as for production of other goods.
Examples of resources are water, plants, minerals, etc.
Proper use and conservation of resources will ensure that a resource is sustainable as it those resources will last for a longer time.
Also, recycling and reusing of resources will make it sustainable.
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What would be the result if crossing over did not happen during meiosis in
humans?
A. There would be less genetic variation in humans.
B. Parents would be more likely to look like their children.
C. The human population could not reproduce.
D. Children would have more chromosomes.
Answer:
A.There would be less genetic variation in humans
Explanation:
During the process of crossing over chromosomes of a homologous pair exchange equal segments with each other. This results in new combinations of genes in the gametes that are not found in either parent, contributing to genetic diversity. Therefore, if this did not occur there would be less genetic variation in humans
There would be less genetic variation in human, if crossing over did not happen during meiosis in humans. thus option A is correct.
What do you mean by crossing over in genetics?
The crossing over is a process that is essential to human genetic diversity. During the crossing over parts of the homologous chromosomes ( two chromosomes identical by structure, but different in origin, one inherited from the mother and one from the father) randomly exchange parts of their sequences.
If the crossing-over didn't exist, this would greatly decrease the genetic diversity because the chromosomes would always be passed o the next generations unchanged.
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The use of DNA as evidence in criminal investigations became possible
because of the?
The use of DNA in criminal cases became possible due to discoveries in the mid-20th century that proved DNA is the genetic material, leading to techniques like DNA fingerprinting and genomic analysis utilized in cases like the 2001 FBI anthrax investigation.
Explanation:The use of DNA as evidence in criminal investigations became possible thanks to pivotal discoveries in the twentieth century that identified DNA as the genetic material. Groundbreaking experiments by scientists like Griffith and later by Avery, MacLeod, and McCarty laid the foundation by establishing that DNA, and not protein, is the key molecule of heredity. This scientific milestone paved the way for the development of DNA fingerprinting by Dr. Alec Jeffreys, which facilitated the retrieval and analysis of DNA from biological samples such as hair, blood, or saliva. Virtually every individual has a unique DNA sequence, which allows forensic experts to use these genetic markers in the identification process and in solving crimes. The first landmark use of genomics in a forensic case emerged in 2001, with the FBI's investigation into bioterrorism involving anthrax.
Moreover, DNA analysis has transcended its forensic applications and is used in areas such as genealogy, medical diagnostics, vaccine development, and cancer therapy.
Genomic analysis remains an invaluable tool in both legal contexts for evidence validation, as well as in broader scientific research and healthcare practices.
What happens when a scientific theory is shown to be an accurate description of a phenomenon?
When a scientific theory is shown to be an accurate description of a phenomenon, It's tested by other scientists to replicate the experiment and confirm the findings.
A scientific theory refers to an explanation of an aspect of the natural world that may be tested over and over again as well as verified according to the scientific method, utilizing accepted protocols of observation, measurement, and evaluation of results. Theories tend to be tested under controlled conditions in an experiment.
Specialized cells such as white blood cells interact with foreign particles in the body. A particular cell belonging to this category recognizes
bacteria and forms a covering around it, pinching off the vacuole. The cell then performs
. The foreign particles recognized by
the particular type of cells differ from the ones recognized by another type of white blood cell. This situation indicates that the receptors are
Answer:
The correct answers are endocytosis and the receptors are specific for the cells.
Explanation:
The white blood cells are the unique cells of the immune system. They perform an essential function of safeguarding the body from foreign agents like bacteria. In order to do so, they identify the bacteria and produces an envelope around it, pinching off the vacuole. With the help of this, the cell performs a procedure known as endocytosis.
On the white blood cells, the receptors found are very unique, as because of them they identify the particular foreign particles, like B cells generate antibodies that combines with the particular antigens, and thus, impart specific immune response. Or it can be said, that specific foreign component is identified by the unique white blood cell, which shows that the receptors on these cells are unique.
The receptors in this context refer to Pattern Recognition Receptors (PRRs), present on white blood cells, specifically macrophages involved in phagocytosis. Each receptor is specific to certain types of foreign substances, allowing the body's immune system to recognize and respond to a variety of pathogens.
Explanation:The receptors referred to in the student's question are Pattern Recognition Receptors (PRRs). These are found on immune cells like white blood cells, including monocytes and macrophages, which recognize Pathogen-Associated Molecular Patterns (PAMPs), the 'signatures' of foreign particles such as bacteria and viruses. The cell mentioned that forms a covering around bacteria and pinches off a vacuole, before performing the immune response is a type of white blood cell, notably, macrophages. They engulf the foreign pathogens in a process called phagocytosis.
Each type of receptor is specific to a type of foreign particle, hence the distinction between the particles that different cells can recognize. For instance, Toll-like receptors (TLRs), a subtype of PRRs, can recognize molecules commonly shared amongst pathogens, but distinguishable from the host's molecules.
Furthermore, this specificity of receptors is crucial to the immune response, allowing different white blood cells to recognize and respond to a wide variety of invaders.
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How did adaptive radiation affect plants after they first moved to land?
A. They evolved the ability to photosynthesize.
B. They evolved into animal-like protists.
C. They evolved into the kingdom Fungi.
D. They evolved to fill the niches found on land.
Answer:
The correct option is D.
Explanation:
Adaptive radiation refers to the ability of living organisms to evolve rapidly from an ancestral forms into variety of other forms especially when the organisms move into a new environment that has abundant resources. The resources, which are present abundantly in the environment allow the living organisms to spread out in the environment and to find different habitats in the environments that favour their survival.
In the question given above, adaptive radiation allows plants to fill different habitats (niches) that are found on land and to spread out rapidly.
the answer is d.
just did it on apex
George went to a dinner party thrown by his company. He was seated with his colleagues when the server bought in the food. The first server put
vegetables on his plate. He noticed that the server had put the vegetables in one specific corner of the plate. If the area of the plate was divided in terms
of the numbers on a clock, where did the server put the vegetables on George's plate?
The server put the vegetables between ____ the
and _____
areas of the plate.
First blank
12 o'clock
3 o'clock
9 o'clock
Second blank
11 o’clock
6 o’clock
5 o’clock
Need help !!
Answer:
Between 3 o'clock and 11 o’clock
Explanation:
which of the following is not an autotroph
Dog is not an autotroph .Dogs cannot produce their own food they are consumers and rely on eating other organisms to obtain energy.
The correct option is D .
Autotrophs are organisms that can produce their own food by converting inorganic substances into organic compounds through processes like photosynthesis or chemosynthesis. Dogs are not autotrophs; they are heterotrophs, which means they rely on consuming organic matter (such as food) to obtain the energy and nutrients they need to survive.
Autotrophs, on the other hand, can create their own food using energy from sunlight (in the case of plants and algae) or from chemical reactions (in the case of certain bacteria).
The complete question is :
which of the following is not an autotroph ?
A) Sunflower
B) Butterfly
C) Algae
D)Dog
Hence , D is the correct option
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Which of the following is caused by reproductive isolation within a species?
A. A decrease in gene flow
B. An increase in genetic flow
C. A decrease in genetic drift
D. An increase in gene flow
Answer:
A
Explanation:
Gene flow is the transfer of genes across two populations. This happens if there is mating between the two populations. However, this can be curtailed either by allopatry (due to geographical isolation) or sympatry (due to behavioral isolation) which results in reproductive isolation between the two populations. If the two population were of the same species, then the reproductive isolation can result in divergent speciation of the two populations.
Answer:
A). A decrease in gene flow.
Why are archaea in a different domain from bacteria?
A. They had independent evolutionary development.
B. They shared a common ancient ancestor.
C. They are eukaryotes, but bacteria are prokaryotes.
D. They are multicellular, but bacteria are unicellular.
There are archaea in a different domain from bacteria, They had independent evolutionary development.
Why are archaea in different domain from bacteria?Archaea differ from bacteria in cell wall arrangement and differ from both bacteria and eukaryotes in membrane design and rRNA type.
These contrasts are important enough to warrant that archaea have a separate domain.
Thus, option "A" is correct, They had independent evolutionary development.
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A. They had independent evolutionary development.
(6.02 MC)What affect do marine protected areas have on environmental quality?
They increase environmental quality by preventing resource overuse.
They increase environmental quality by adding new species.
They decrease environmental quality by removing all human activity.
They decrease environmental quality by adding recycling facilities.
Answer:
They increase environmental quality by preventing resource overuse.
Explanation:
Marine protected areas are regions of the seas and oceans that are restricted from human activities.
The goal of marine protected areas is to conserve naturally available resources in the ocean. To conserve resources, materials are used resonably in order to prevent them from being limited in terms of availability.
When a marine area is protected, the enviromental quallity improves because biodiversity of life and resources can be perfectly in check.
Why are the foetal placental blood capillaries very close to the mother's blood capillaries?
Answer:
fetal-placental circulation allows the umbilical arteries to carry deoxygenated and nutrient-depleted fetal blood from the fetus to the villous core fetal vessels.
Explanation:
Final answer:
The fetal placental blood capillaries are close to the mother's to enable the effective exchange of oxygen, nutrients, and waste without the blood mixing. The chorionic villi facilitate this exchange by providing a large surface area while still keeping the circulatory systems separate. Avoiding fetotoxic substances is crucial as they can cross the placenta and harm the fetus.
Explanation:
The fetal placental blood capillaries are very close to the mother's blood capillaries to facilitate the efficient transfer of substances between the fetus and the mother. This proximity allows for the exchange of gases, nutrients, and waste products across their capillary walls without the two blood supplies mixing. The maternal and fetal blood is separated by the chorionic villi, which provide an ample surface area for the two-way exchange, ensuring that vital substances such as oxygen and nutrients pass from the mother to the fetus while carbon dioxide and other waste products are removed from the fetal blood.
The placenta is a temporary organ where the maternal and fetal blood vessels are tightly intertwined, yet separated by thin membranes. This structure allows a high rate of exchange, which increases throughout gestation as the villi become thinner and more branched. Despite this closeness of the vessels, blood cells are not exchanged, which maintains the separation between the mother's and fetus's circulatory systems while still allowing for the critical transfer of substances.
Furthermore, the placenta is permeable to various substances, some of which can be harmful. It is important to avoid fetotoxic substances such as alcohol, nicotine, and certain drugs, which can cross the placenta and cause damage to the developing fetus. This underlines the importance of maternal health and well-being for the optimal development of the fetus.
name the star closest to our solar system
Answer:
See explanation below.
Explanation:
The star that is nearest to our solar system is Proxima Centauri. It is about 4.22 light years away. That means if you travel at the speed of light, it will take you 4.22 years to travel from here to there.
Hope this helps! Have an Awesome Day!! :-)
Which of the following structures is a double layer of phospholipids with
proteins?
A: cytoplasm
B: cell membrane
C: ribosome
D: cell wall
The double-layered structure of phospholipids with proteins is known as the cell membrane. It separates the interior of the cell from the external environment and the embedded proteins perform important functions.
Explanation:The structure you're referring to, a double layer of phospholipids with proteins, is known as the cell membrane (Option B). This boundary, also termed plasma membrane, separates the cell’s interior from its external environment. The phospholipids form a 'bi-layer' with their hydrophobic (water-repelling) tails pointing inwards and their hydrophilic (water-attracting) heads facing outwards.
The proteins embedded within this structure carry out a variety of essential functions such as transporting substances in and out of the cell.
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Which statement about plant classification below is true?
A. No nonvascular plants bear seeds, but not all vascular plants bear seeds
B. Not all nonvascular plants bear seeds, but all vascular plants do bear seeds.
C. All vascular plants are angiosperms, but not all nonvascular plants are mosses.
D. Not all angiosperms produce flowers, but all gymnosperms produce cones.
Answer:
A. No nonvascular plants bear seeds, but not all vascular plants bear seeds
Explanation:
Nonvascular plants are those that do not have conductive vessels (xylem and phloem), in addition, nonvascular plants do not have seeds, fruits or flowers.
Some examples of nonvascular plants are mosses and liverworts.
Most vascular plants (have conductive vessels) have seeds, as in the case of angiosperms and gymnosperms, however, there are also some species of seedless vascular plants, represented by the lycopods and especially the pteridophytes, which are in greater number.
Examples of seedless vascular plants: ferns and horsetails.
What protects the lining of the stomach from acidic gastric juices?
Answer:
Small pores called gastric pits
Explanation:
Small pores called gastric pits protect the lining of the stomach from acidic gastric juices.
Hope this helps!
Answer:
What protects the stomach lining of gastric juices is the Gastric Mucosa.
Explanation:
The Gastric Mucosa is the lining of the stomach, which consists of an internal epithelium, a middle mocous membrane and an external muscularis mucosae. The superficial cells produce mucus that protects the stomach from the attack of acid and digestive enzymes. When the epithelium invaginates within the mucous membrane in various regions of the stomach, different tubular gastric glands are formed. These glands are made up of cells that secrete mucus, enzymes, hydrochloric acid and hormones.
The stomach mucous lining the inside of the stomach with the thickness and texture necessary for our digestive organ not suffer the effects of their own corrosive juices. This mucus lubricates the food bolus to circulate easily through the digestive tract and also forms a thick coating on the inner wall of the stomach to prevent, precisely, being digested by their own juices.
The acids attack, of course, this mucuous wall, but the stomach wall regenerates them continuously. In addition, the stomach lining makes its own antacid, secreting bicarbonate to neutralize the acid.
Why would a rough, steep mountain habitat have a higher rate of speciation than a large, open grasslands habitat??
A rough, steep mountain habitat will have much higher rate of speciation than an open grassland habitat, and there are few reasons for that. The rough, steep mountain will have several biomes, depending on the elevation, as the climate is changing with the elevation, thus the living conditions are different. This results in different types of organisms at each biome in accordance with the elevation, so there will be much more different species because of the specializations required. The mountain will also act as a natural barrier for the air masses, resulting in the windward side being much more moderate in the temperature and wetter. The leeward side, on the other hand, will be much drier and warmer. This will result in further specialization, by having different habitats on the two different sides of the mountain even though the elevations are the same. The open grassland habitat will have much less speciation, with the prime reason being that it has monotonous conditions, thus the organisms will be the same all over it as the conditions are the same all over ti.
Answer: The mountain would isolate subgroups of the population.
Explanation: APEX 8/22/19
what is the theory of evolution?
Answer:
In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. The theory of evolution is based on the idea that all species? are related and gradually change over time.
Which statements are true regarding the cosmological principle? 1 The universe looks the same from all directions, but can change and evolve over time. 2 The universe looks the same from all directions, and hasn't and won't change or evolve over time. 3 The universe can't be studied scientifically because scientists can't directly test their hypotheses. 4 Scientists can study the universe because the cosmological principle suggests that any physical laws or processes are the same for the entire universe.
There are two correct statements, they are:
1. The universe looks the same from all directions, but can change and evolve over time.
4. Scientists can study the universe because the cosmological principle suggests that any physical laws or processes are the same for the entire universe.
Final answer:
The cosmological principle asserts that the universe is homogenous and isotropic; the true statements regarding this principle are 1. The universe looks the same from all directions, but can change and evolve over time and 4. Scientists can study the universe because the cosmological principle suggests that any physical laws or processes are the same for the entire universe.
Explanation:
The cosmological principle is a fundamental assumption in our understanding of the universe. It states that on a large scale, the universe is homogeneous and isotropic, meaning it is the same in all directions and locations. Regarding the student's question, the first and fourth statements are true:
The universe looks the same from all directions, but can change and evolve over time.Scientists can study the universe because the cosmological principle suggests that any physical laws or processes are the same for the entire universe.These statements align with current evidence, including the expansion of the universe as observed by Hubble and later research, which implies the universe's uniformity, apart from evolution over time. Models like the Big Bang theory are built on the cosmological principle. It has enabled us to understand not just our local part of the universe but to make scientific predictions about the universe as a whole, its structure, origin, and potential fate. It is important to note that scientific knowledge could change with new information, but basic scientific principles have withstood the test of time.
Identify the two layers of Earth where seismic Swaves do not travel
Upper mantel
lower mantle
outer core
inner core
Answer: outer core and inner core
: Seismic waves do not travel through the upper mantle, lower mantle, outer core, or inner core. Seismic waves are waves of energy that are generated by earthquakes or other disturbances in the Earth's crust. There are two main types of seismic waves: P-waves (primary waves) and S-waves (secondary waves).
What are P waves ?P-waves are longitudinal waves that travel through the Earth's interior by compressing and expanding the material they pass through. S-waves, on the other hand, are transverse waves that move perpendicular to the direction of wave propagation.
S-waves can only travel through solid materials and are therefore blocked by the liquid outer core and the solid inner core of the Earth.
The upper mantle and lower mantle are both solid layers of the Earth's interior and are able to transmit both P-waves and S-waves. However, the outer core is a liquid layer, and S-waves cannot propagate through liquids. The inner core, although solid, is under such intense pressure that it behaves like a liquid with respect to seismic waves, and S-waves cannot pass through it either.
The fact that S-waves do not travel through the outer and inner core has been instrumental in helping scientists understand the internal structure of the Earth.
By analyzing the way that seismic waves are reflected and refracted as they pass through the Earth, scientists can create models of the Earth's internal composition and infer details about the density, temperature, and other physical properties of its different layers.
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What is the purpose of biofertilizers?
a reduce pollution
b. reduce insect threats
c. reduce erosion
d. reduce herbicide use
Please select the best answer from the choices provided
The purpose of biofertilizers is to reduce pollution, which is in Option A because the pollution occurs in the soil, and when the soil is washed away, the pollution from the soil enters the water, causing water pollution, and so on.
What are biofertilizers?The purpose of biofertilizers is to increase soil fertility and crop productivity by introducing beneficial microorganisms, such as bacteria and fungi, and to reduce soil and water pollution, these biofertilizers are considered as an eco-friendly and sustainable alternative to synthetic fertilizers, as the synthetic fertilizers have negative impacts on soil health because it contains chemicals that cause soil acidification, nutrient depletion, and overall harm soil fertility etc.
Hence, the correct answer is that the purpose of biofertilizers is to reduce pollution, which is in Option A among all the other options.
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Scientific inquiry
a. continually refines ideas
b. leads to discarding older accepted ideas
c. requires logical ideas
d. all of the above
Answer:
D. :)
Explanation:
the maintainnce of healthy bones depend on the balance of osteoblast and osteoclast activity, predict what would happen if osteoblast activity exceeds osteoclast activity?
Answer:
If the activity of osteclasts(which demineralize bone) exceeded osteoblast activity(production of new bone), then the bone's mineral content(and thus its mass) would decline, making it weaker.
If osteoblast activity exceeds osteoclast activity, there could be an increase in bone density but potentially abnormal bone structure due to imbalanced bone remodeling. Drugs may be used to help balance osteoblast and osteoclast activity to maintain healthy bones.
Explanation:The balance between osteoblast and osteoclast activity is crucial for the maintenance of healthy bones. Osteoblasts are cells that form new bone, while osteoclasts are responsible for breaking down old bone tissue. This process of breakdown and reformation is continually ongoing to remodel the bone tissue.If osteoblast activity exceeds osteoclast activity, it means that bone formation is occurring at a faster rate than breakdown. This could lead to an increase in bone density as more bone material is deposited than resorbed. However, it could also potentially result in abnormal bone structure if the remodeling process is not balanced, as the bones may not properly reshape according to the body's needs.In certain cases, therapeutic drugs may be introduced to balance osteoblast and osteoclast activity. Some drugs can inhibit overly active osteoclasts or promote osteoblasts to maintain a healthy bone structure.It's important to remember that the balance between osteoblasts and osteoclasts fixation and absorption activities play an integral role in our body's skeletal health.
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the basic unit of life
Answer:
The answer is cells
Explanation:
I've done this question for school before and have gotten it right. Hope this helps! Please give brainliest!
Answer:
The Basic Unit of life is cells!
What do all macromolecules have in common with each other?
O
A. They all are formed from the same elements.
O
B. They all have major roles in cell membranes
O
C. They all act as catalysts in the body.
O
D. They all have peptide bonds between carbon atoms.
The common feature of all macromolecules is that they are formed from the same elements.
WHAT ARE MACROMOLECULES?
Macromolecules are large (polymeric) organic molecules composed of units. There are four major macromolecules in nature namely;CarbohydratesProteinsNucleic acidsLipidsSince all of these four macromolecules are organic in nature, they are formed from similar elements. All macromolecules are composed of carbon, oxygen, hydrogen atoms.Hence, The common feature of all macromolecules is that they are formed from the same elements.
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Which of the following join together to form molecules? Atoms Organisms Organs Tissues
Answer:
Atoms
Explanation:
Answer:
Atoms
Explanation:
They are the smallest unit of matter than we can identify.
What is DNA? Where is it found?
DNA stands for deoxyribonucleic acid. it's located in the cell nucleus. DNA is the molecule that has the genetic code of organisms.
Answer:
DNA is a self replicating material which is present in almost all living organisms as the main constituent of chromosomes. It is also the carrier of genetic information.
DNA is located in the cell nucleus where it is called nuclear DNA.
And small amount of DNA can also be found in the mitochondria where it is called mitochondrial DNA.
What is the difference between Germlines mutations and somatic mutations?
Answer: When mutation occur in the sex cell/germ cell it is known as Germinal mutation but if mutation occur in cell other than sex cell it will be called as Somatic mutation.
Explanation:
Germlines mutation: As this type of mutation occurs in germ cells (sperm and egg), this mutation can pass on to offspring when either muted sperm or gametes fertilize to form zygote. Example of germline mutation is inherited diseases like Down syndrome.
Somatic mutation: Somatic mutation can occur in any cell like muscle cell, gut, immune system but not in the germ cells and therefore cannot pass to the offspring. Examples of somatic mutation are Cancer and tumor
The primary difference between germline and somatic mutations lies in their potential for inheritance. Germline mutations occur in reproductive cells, can be passed on to offspring, and affect every cell in the offspring. In contrast, somatic mutations occur in non-reproductive cells, do not get passed to offspring, and usually have localized effects such as cancer.
Explanation:Difference Between Germline and Somatic MutationsGermline mutations and somatic mutations are two major categories of mutations that occur within the cells of an organism. Germline mutations happen in the reproductive cells known as gametes — eggs and sperm — and are inheritable, meaning they can be transmitted to offspring. In contrast, somatic mutations occur in the somatic or non-reproductive cells of the body, and while they can lead to issues such as cancer within the individual, they cannot be passed down to the next generation.
Germline mutations are significant as every cell in the offspring will contain these mutations, which can lead to inherited diseases or traits. Somatic mutations, on the other hand, may remain confined to a single cell and its progeny, potentially leading to localized effects such as the development of tumors or other somatic issues but not affecting the germline. Therefore, the distinction between germline and somatic mutations is critical for understanding the inheritance and impact of genetic mutations.
The rate of mutation may also differ; somatic cells, due to their vast numbers and frequent replication, often acquire more mutations compared to gametes. In humans, the current estimate of the chance of a new germline mutation is approximately 1x10-8 per base pair per generation, which is significant given the large number of base pairs in the human genome.