Lacerate leaves are determined in the opium poppy by two genes, with a dominant allele at either or both loci. The correct option is A.
To determine how lacerate leaves are inherited in the opium poppy, let's analyze the genetic cross and the resulting phenotypic ratios.
Given Information
A homozygous variety with lacerate leaves (let's denote it as LL) was crossed with a homozygous variety with normal leaves (ll).All F1 progeny had lacerate leaves (L).F1 (Ll) plants were crossed to produce the F2 generation.F2 generation had 249 lacerate leaves (L) and 16 normal leaves (l).Analysis
First, we need to identify the phenotypic ratio of the F2 generation to infer the genetic mechanism behind the lacerate leaves.
Total number of F2 plants = 249 (lacerate) + 16 (normal) = 265
Phenotypic Ratio
249 lacerate : 16 normal
249 / 16 ≈ 15.56 : 1
This ratio is close to 15:1, which is a well-known phenotypic ratio in dihybrid crosses involving two genes with a dominant allele at either or both loci contributing to the phenotype.
The 15:1 ratio suggests that lacerate leaves are determined by two genes, where a dominant allele at either or both loci results in lacerate leaves.Let's denote these two genes as A and B, with A and B being the dominant alleles and a and b being the recessive alleles.If the presence of either A or B or both (A_, B_, A_B_) results in lacerate leaves, the genotype aa bb will result in normal leaves.Therefore, the 15:1 ratio can be explained as follows:
9 A_B_ (both dominant alleles)3 A_bb (dominant A only)3 aaB_ (dominant B only)1 aabb (recessive alleles at both loci resulting in normal leaves)
This gives us a 15 (lacerate) : 1 (normal) ratio.
Conclusion
The data and the phenotypic ratio fit the scenario of two genes, with a dominant allele at either or both loci contributing to the lacerate leaves phenotype.
Therefore, the correct answer is:
A. two genes, with a dominant allele at either or both loci
The complete question is:
A homozygous variety of opium poppy (papaver somniferum laciniatum) with lacerate leaves was crossed with another homozygous variety with normal leaves. all the f1 had lacerate leaves (jagged-edged leaves). two f1 plants were crossed to produce the f2. of the f2, 249 had lacerate leaves and 16 had normal leaves.
How are lacerate leaves determined in the opium poppy?
A. two genes, with a dominant allele at either or both loci
B. two genes, where one allele at a single locus is recessive lethal
C. one gene, with codominant alleles at a single locus
D. two genes, with a dominant allele at both loci
During the second trimester, energy needs of pregnant women are ________ more kcalories per day than those of nonpregnant women.
Why do loss of function mutations in p53 often lead to mutations in other genes? see section 19.6 ( page 393) ?
A surgeon performs a high thoracotomy with resection of a single lung segment on a 57 year-old who is currently a heavy smoker who had presented with a six-month history of right shoulder pain that radiates to the chest. an apical lung biopsy had confirmed lung cancer. what cpt® and icd-10-cm codes are reported
Answer:
32484 (CTP) and C34.10. (ICD-10-CM)
Explanation:
Both CTP and ICD-10-CM are sets of codes used by healthcare professionals in the hospital setting. These codes are very useful for doctors, nurses and any other medical professional, because they reference all diseases, surgeries, procedures, applications and any other photor performed in the medical environment. These codes allow communication between professionals to be done faster and more universally, so professionals in any region of the world can understand what is happening to a patient.
In the case shown in the question above, the codes used would be 32484 in CTP and C34.10 in ICD-10-CM.
What is number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction. Question 1 options: Coefficient Subscript Molecule Reactant
The Energy Policy Act of 2005 emphasized two actions. The first was that the US has made improvements in energy conservation. What is the second? A) The US will continue to implement wind power alternatives. B) The US will stop fossil fuel development and switch to renewable resources by 2025. C) The US will continue to develop alternative energy sources. D) The US will concentrate on finding fossil fuel sources in the US instead of depending on foreign sources.
Which of the following best describes a consequence of clearing land for mining?
A- a greater risk of flooding and natural disasters
B- a decline in the diversity of species living in the area of the mine
C- reduced erosion as pits are created to collect sediment
D- increased soil fertility as nutrients are brought closer to the surface
X-1's waterproof, sweatproof, weatherproof earphones such as the momentum, the ultralight in-ear headphone, were developed for athletes and sports enthusiasts. the momentum would be best classified as a(n) _____________
The Momentum earphones by X-1 are best classified as a product designed for a niche market, particularly catering to athletes and sports enthusiasts due to their durability and weather-resistant features.
Explanation:X-1's waterproof, sweatproof, weatherproof earphones like the Momentum, which were developed for athletes and sports enthusiasts, can be best classified as a product specifically designed for a niche market. These earphones cater to the needs of individuals who require durable and reliable headphones that can withstand rigorous physical activity and adverse weather conditions. This type of headphone is a technological innovation that merges sporting goods with personal electronics, making the Momentum an exemplary product within the sports technology sector.
Medical procedure in which epithelial cells are scraped from another area of the body and examined microscopically
Trans fats occur when _______________________.
What hazards should you be aware of when drying your recovered sio2 and caco3?
A bird has two legs, two eyes, and feathers, and it uses its wings to fly in the sky. the organizing of this information about birds is known as a(n):
Glycolysis occurs in what part of the cell
Glycolysis, the first step in both aerobic and anaerobic respiration, happens in the cytoplasm of the cell. It involves the breakdown of glucose into two molecules of pyruvate.
Explanation:Glycolysis is a part of cellular respiration that occurs in the cytoplasm of the cell. This process involves the breakdown of glucose, a six-carbon sugar molecule, into two three-carbon molecules of pyruvate. It is an anaerobic process, which means it can occur in the absence of oxygen. An important thing to remember is that glycolysis is the first stage in both aerobic and anaerobic respiration.
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How are the foods that we eat and atp related? how is atp used in organisms?
About 0.3% of human live births are trisomic. in contrast, only 0.02% of human live births are monosomic. select the best explanation for why the occurrence of monosomics is less than that of trisomics.
Hyaluronidase and collagenase both allow bacteria to _____
Hyaluronidase and collagenase are enzymes produced by bacteria that degrade components of connective tissue, allowing the pathogens to spread through the host’s body.
Explanation:Hyaluronidase and collagenase are enzymes produced by bacteria that allow the pathogens to degrade components of connective tissue and spread through the host's body.
Hyaluronidase degrades hyaluronic acid, which acts as an intercellular cement in connective tissue, while collagenase digests collagen, the dominant protein in connective tissue.
By breaking down these proteins, hyaluronidase and collagenase help the bacteria penetrate and spread through the host tissue.
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Which feature is common to all primates?
A. large brain relative to body size
B. upper body weight distributed over pelvis
C. pelvis rotated inward
D. two arches in foot
The correct answer is option A
The primates constitutes of an order within the placental mammals. This clade includes apes, large monkeys and non-human primates such as human beings.
All the primates have large brain relative to the body size. A capuchin monkey's brain will be around three times larger than that of the other animals of the same size. Humans have the largest brain size as compared to that of the other animals.
Which sedimentary rock is most likely to have been deposited in a very high-energy stream?
Answer:
Conglomerates
Explanation:
Gradpoint
The principle difference between point source and nonpoint source water pollution is _______.
a.
whether the pollution is organic or inorganic
b.
the number of sources of pollution
c.
the amount of pollution
d.
whether it is from commercial or agricultural source
The correct answer is option B
The main difference between the point source and non point source is the number of sources that is involved in them.
The point source can be defined as the pollution having a single source by which the pollution is coming out.
Non point source can be defined as the pollution having more than one source of pollution which combinely can be defined as non point source.
The body is represented spatially along the somatosensory cortex and motor cortex. this mapping is called __________.
At site 1, three groins are constructed. what would happen to the beach if the middle groin was not constructed?
Final answer:
Without the middle groin, a beach would have more uniform sand distribution but could also experience increased erosion in the particular area the groin would have protected. This can lead to broader implications for the local ecosystem and beachfront properties.
Explanation:
If the middle groin at site 1 were not constructed, the beach would likely experience more uniform sediment distribution, as the presence of groins typically interrupts the natural flow of sediment along the coastline. Without the middle groin, the longshore drift would more evenly spread the sand along the beach between the two remaining groins. However, the immediate area where the middle groin would have been could potentially suffer from increased erosion over time due to the lack of a physical barrier to protect that specific part of the shore. The beach may adapt naturally or could be more susceptible to damage from forces such as strong currents or storm impacts, potentially affecting local ecosystems and nearby beachfront properties, as per the Turneffe Atoll Trust 2008 study. This has broad implications for coastal erosion, which scientists and engineers are studying to better construct beach protections such as groins and breakwaters.
When is it necessary for a scientists to do research? Select all that apply. before forming a hypothesis only after a hypothesis is written after generating an idea from an observation when designing an experiment to test a hypothesis
The necessary steps a scientist do research are before forming a hypothesis, after generating an idea from an observation, when designing an experiment to test a hypothesis. Thus, options A, C, D are correct.
What is a research hypothesis ?When a hypothesis states something with expected outcome of a scientific study and are genuine called as research hypothesis.
These have three attributes such as specificity, testability and falsifiability.
First of all a research hypothesis must be specific to a topic, secondly it must be testable means that it must be able to collect observable data from scientific study.
Thirdly, hypothesis must be falsifiable, means some identifiable way to test the hypothesis is true or false.
For a good research hypothesis a background research should be done.
Other methodology should be implemented after generating idea from observation, a suitable scientific method should be implemented to test the hypothesis accurately.
Thus, options A, C, D are correct.
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Non examples of vacuole
How do energy conversions make a car go down the street?
A. The stored energy of the gasoline is converted to heat, and then to the stored energy of the car.
B. The kinetic energy of the gasoline is converted to heat, then to kinetic energy of the car.
C. The kinetic energy of the gasoline is converted to heat, then to potential energy of the car.
D. Potential energy is stored in gasoline, which is converted to heat, then to the kinetic energy of the car.
What does a marine fossil in a desert tell scientists?
A. marine fossil could not be found in the desert
B.the desert was always a desert
C.the area was once under water
D.marine life was once on land
List three factors that could affect the reproductive potential of these maple trees
The reproductive potential of maple trees can be influenced by factors such as abiotic factors (weather, pollution), the effects of climate change (changing temperatures and precipitation patterns), and competition for nutrients and sunlight.
Explanation:Three factors that could affect the reproductive potential of maple trees include Abiotic Factors, Climate Change Effects, and Competition for Nutrients.
Abiotic Factors
Abiotic factors, often physical or chemical in nature, include weather, natural disasters, and pollution. These factors can influence the population regardless of its density. For example, a severe frost during the flowering period can destroy the flowers of the maple trees, reducing their reproductive potential.
Climate Change Effects
Changing temperatures and precipitation patterns due to climate change can have significant impacts on the reproductive potential of maple trees. For example, Researchers have shown that many plant species are flowering earlier as a response to changing climate, and this mismatched timing could impact the ability of maple trees to successfully reproduce.
Competition for Nutrients
Lastly, competition for resources, particularly nutrients, and sunlight, can affect a tree's growth and ultimately its reproductive potential. For instance, if a maple tree is surrounded by other species of trees that are taller or have broader crowns, it might not receive enough light for photosynthesis, which can affect its growth and its ability to reproduce.
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How would you determine which biomes are located in the southern hemisphere?
With the help of climate, we can determine which biomes are located in the southern hemisphere.
It is because different biomes needs particular type of climate for their growth and survival. The climate of southern hemisphere is mild due to the presence of more water bodies as compared to land so those plants and animals can survive and grow in this environment which needs mild type of environment and more precipitation so we can conclude that climate is the factor which determines the presence of biomes in southern hemisphere.
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To determine the biomes in the southern hemisphere, look at the latitude and proximity to the equator.
Explanation:To determine which biomes are located in the southern hemisphere, we can use the concept of latitude. Biomes that are closer to the equator tend to be tropical, while those located farther away from the equator are typically temperate or polar. In the southern hemisphere, we would expect to find biomes such as tropical rainforests, savannas, and deserts closer to the equator, while temperate forests and tundras would be located farther south.
Humans are warm-blooded. They are able to maintain a constant body temperature despite changing environmental temperatures. Which part of the brain controls body temperature?
Almost all the energy used by living things comes from _____.
Answer: Sun
Explanation: Almost all the energy that is used by the organism on Earth is derived from the Sun. It is source of energy, power and heat which is used by the organism for various purposes.
The sun provides energy and sunlight for the process known as photosynthesis. This process provides food to the organism living in the ecosystem. Without this process there would be no energy source available to the organism.
In the scientific world, cold hard facts are often termed _____.
laws are your answer.
For example, "The law of gravity" says that whatever has more mass than air would be pushed downward, while those with less would be pushed upwards by the air.
Theory's on the other hand, are yet to be proven, but are generally accepted (such as the Theory of Evolution)
hope this helps
A squirrel helps carry out a plant’s reproduction. Arrange the steps in the correct order, starting with successful pollination.
Answer:
hope this helps!! let me know if it is not rite!!
Explanation:
for Plato/Edmentum users!!