The actual patterns of dna variation in humans show that african populations contain:

Answers

Answer 1
The actual patterns of DNA variation in humans reveal that those from African populations also contain almost all of the common DNA found in other races such as Asians, Europeans, and other novel variants. 

African populations were shown to contain alleles (genetic variations) not present in non-African populations but nearly all of the alleles common in non-African populations are present in African populations. Thus, although externally, different races may present various physical characteristics, our genes dictate that we are more similar than we actually think/believe. 

Related Questions

The hormone epinephrine (adrenaline) increases the pumping rate of the sodium-potassium exchange pump in skeletal muscles. how would you expect this to affect the concentration of na+ and k+ inside the muscle cell

Answers

The Na/K-ATPase pump or sodium-potassium pump will take out sodium ion from cells and take in potassium ion as the exchange. This is why in normal condition the concentration of sodium ion is higher outside cells but the concentration of potassium ion is higher inside cells. If the pump activity is increased, this will also increase the concentration gaps. So
1. sodium ion inside cells will be lower
2. potassium ion inside cell will be higher 

• ed kienholz's the beanery includes sculptural replicas of ________.

Answers

The answer is people, as this is one of the sculptural replicas that have been made by Edward Kienholz’s in the beanery. He was able to make beautiful sculptures and replicas that could also depict aspects in the life of the modern world.

Final answer:

Ed Kienholz's 'The Beanery' features sculptural replicas of a bar scene, including bar elements and people with clock faces.

Explanation:

Ed Kienholz's The Beanery includes sculptural replicas of the following elements: people, a bar, bar stools, glass bottles, clocks, and various other objects one would find in a typical bar setting of the period.

The installation captures a moment in time at the famous Los Angeles bar called The Original Beanery, which was located on Santa Monica Boulevard, replicating not only the physical components of the space but also the atmosphere and the patrons within it. Each figure's face in the artwork is replaced by a clock, set at 10:10, symbolizing the static nature of the mannequins and reinforcing the concept of time standing still within the space.

Where and how does ammonification/ nitrification take place

Answers

Bacteria convert ammonia to nitrite and nitrate but they must be in light so this must occur below the euphotic zone in the ocean.

Answer:

     Bacteria converted to ammonia, then to nitrite and nitrate. Ammonia and Nitrite must be in light so ammonification/nitrification can occur below euphotic zone near the ocean.

Which state of matter is the least dense?

Liquid

All the above

Solid

Gas

Answers

Gas. Hope this helps!!

Answer: gas

Explanation:

The addition of sugar residues to the protein after translation is called

Answers

The addition of sugar residues to the protein after translation is called glycosylation

The addition of sugar residues to the protein after translation is called glycosylation.

What is glycosylation ?

In order to create a glycoconjugate, a carbohydrate, also known as a glycosyl donor, is joined to a hydroxyl or other functional group of another molecule by the process of glycosylation. In biology, glycation can refer to a non-enzymatic reaction, whereas glycosylation often refers to an enzyme-catalyzed event.

A crucial and tightly controlled method of processing secondary proteins inside of cells is glycosylation. It is essential for determining the stability, function, and structure of proteins. Glycosylation is known to alter the way proteins are arranged in three dimensions structurally.

The most prevalent type of posttranslational modification (PTM) on excreted and extracellular membrane-associated proteins is protein glycosylation (Spiro, 2002). Many distinct kinds of glycans, also known as carbohydrates, saccharides, or sugars, are covalently joined to a protein in this process.

Thus, The addition of sugar residues to the protein after translation is called glycosylation.

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Abby meditates with great concentration for 20 minutes, twice a day. what type of meditation is she engaging in?

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She engaged in Transcendental meditation.Transcendental Meditation (TM) refers to a specific form of silent mantra meditation called the Transcendental Meditation technique, and less commonly to the organizations that constitute the Transcendental Meditation movement

Abby likely practices a traditional form of meditation that includes maintaining a specific posture and focused attention, promoting relaxation and well-being. Key elements usually involve a quiet location and deep breathing.

Abby is engaging in meditation, a practice aimed at achieving a state of relaxation and well-being by focusing on something specific, such as one's breathing. Given that she meditates twice a day for 20 minutes with great concentration, it likely involves a traditional form of seated meditation. This method usually includes sitting upright, maintaining a specific posture, and practicing deep breathing to clear the mind of distractions.

Meditation can vary in technique, ranging from focusing on a mantra to achieving 'non-thinking' states as recommended by Master Dogen. Regardless of technique, most forms share key elements like a quiet location, a comfortable posture, focused attention, and an open attitude toward distractions.

The most important treatment for a patient with severe abdominal pain and signs of shock includes:

Answers

Transporting the patient immediately 

breathing that is easier in an upright position is called

Answers

Orthopnea, upright breathing. Hope this helps!
Final answer:

Orthopnea is the term for breathing which is easier in an upright position, often seen in conditions like heart failure or certain respiratory diseases. It's distinguished from quiet breathing, which occurs at rest, and forced breathing, which involves muscle contractions and occurs during active tasks. All these types of breathing depend on the air pressure in the atmosphere and within the lungs.

Explanation:

Breathing that is easier in an upright position is called Orthopnea. This mode of breathing involves discomfort or difficulty in breathing when lying down and is often relieved when the person sits or stands upright. Orthopnea is commonly seen in conditions like heart failure or certain respiratory diseases. This condition differentiates from the types of breathing such as quiet breathing (eupnea) and forced breathing (hyperpnea).

During quiet breathing, the diaphragm and external intercostals contract, allowing inspiration and expiration at rest. On the contrary, forced breathing involves additional muscle contractions during exercise or tasks requiring active thought. Muscles of the neck contract and lift the thoracic wall during forced inspiration, and accessory muscles contract to force the diaphragm further into thorax during forced expiration. Whether it is orthopnea, quiet breathing, or forced breathing, the ability to breathe is dependent on the air pressure of the atmosphere and the air pressure within the lungs.

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Which modifiable risk factor is the leading cause of death in 2000?

Answers

I read somewhere that it was tobacco use.

What is the difference between a single gene trait and a complex (polygenic) trait?

Answers

Single gene traits: controlled by a single gene that has two alleles (ex: widow's peak) – only two phenotypes are possible – widow's peak or no widow's peak.Polygenic traits: controlled by two or more genes. Has 2 or more alleles. One polygenic trait can have many possible genotypes and phenotypes! 

What measurement unit describes the amount of energy food contains?

Answers

meww :'p it's calories.

The students in Ms. Hill's science class were investigating the properties of water. They placed a piece of celery in a beaker of blue water. The next day, the celery was no longer green, but blue, all the way up to the leaves. What property of water BEST explains why the blue water moved up the celery stalk?

A. Bouyancy
B. Specific heat
C. Surfece tension
D. Capillary action

Answers

D. Capillary action                                                                  

Final answer:

The best explanation for why the blue water moved up the celery stalk in Ms. Hill's science class is capillary action. This water property allows liquids to climb against gravity in narrow tubes or porous materials, like the xylem tubes in a plant's stem.

Explanation:

The property of water that best explains why the blue water moved up the celery stalk in Ms. Hill's science class is capillary action. Capillary action is the ability of a small, narrow tube or a porous material to draw a liquid upwards against the force of gravity. This phenomenon is what allows plants, like the celery stalk, to absorb water from the ground. The water molecules are attracted to the walls of the xylem tubes in the plant's stem and then to each other, thus enabling them to climb against gravity.

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Vitamin b12 is attached to a protein called transcobalamin ii and travels in the blood bound to this protein. vitamin b12 is attached to a protein called transcobalamin ii and travels in the blood bound to this protein.
a. True
b. False

Answers

The answer is true. Vitamin B12is progressively immersed transversely the membranes of intestinal cells, where it is connected to a particular protein called transcobalamin II. This complex go through the portal vein and to the liver, where thereafter go in the bloodstream.

During ____________, the chromosomes unwind from their condensed state and the nuclear envelope reforms around the chromatin in the two new daughter cells.

Answers

telophase of mitosis

The given blank can be filled with telophase.

The telophase is the last stage of the cellular division. During the cell division in mitosis, four phases occur. These phases are the prophase, metaphase, anaphase and the telophase.

In the prophase, the condensation of the chromosomes occurs. In the metaphase, the chromosome are aligned at the equator and the spindle fibers are attached to the chromatids. In the anaphase, the sister chromatids are separated and moved to the opposite poles.

In the telophase, the chromatids start decondensing after reaching the opposite poles, and the nuclear envelop is formed around them, this results in formation of two nucleus of future daughter cell. The telophase lead to cytokinesis, which is the division of the cytoplasm.



Write the correct words in order in each bubble for the scientific method

Answers

The Scientific Method Order

-Question
-Hypothesis
-Experimentation
-Observation
-Analysis
-Conclusion

Primate females:
a. give birth to more offspring than do many other mammals
b. give birth to twins regularly
c. invest less in their offspring than do many other mammals
d. give birth to fewer offspring than do many other mammals

Answers

Primate females give birth to fewer offspring than do many other mammals. Many other mammals give birth to full litters, sometimes as many as 20 at a time, where primates typically give birth to between one and two offspring at a time, and rarely to three, without medical intervention. Mammals tend to give birth to fewer offspring than they have teats/nipples to allow for feeding.

The nurse is assessing an elderly woman and suspects abuse. which questions are appropriate for screening for abuse? select all that apply

Answers

The recommended type of questions, based on American medical association, are indirect questions. If you approach the elderly woman, asking "Are you being abused?" , the woman will most likely say no.

Most appropriate would be: "Are you afraid of anybody at home or anyone who enters your home?" "Has anyone ever physically hurt you?", "Are you alone a lot?"
Final answer:

Healthcare professionals should screen for elder abuse by asking about physical, sexual, psychological, and financial abuse, as well as neglect. Awareness of the signs and understanding risk factors contribute to identifying and addressing abuse effectively. Supportive engagement can encourage disclosure in what are often underreported situations.

Explanation:

Appropriate Screening Questions for Suspected Elder Abuse

When assessing an elderly woman and suspecting abuse, it is critical for a nurse to ask questions that cover the different types of abuse that elderly individuals might face. Based on the research by Dr. Ron Acierno and others, appropriate screening questions should aim to identify signs of physical abuse, sexual abuse, psychological or emotional abuse, neglect, financial abuse, abandonment, and self-neglect. Questions could include inquiries about incidents of hitting, improper touching, verbal harassment, lack of care, or unauthorized use of the person's money. Furthermore, it is important to note any signs of mistreatment such as injuries, changes in behavior, unmet needs, or unusual financial transactions.

Understanding the prevalence and risk factors of elder abuse, such as a history of depression in the caregiver or dependency of the caregiver on the elder, is crucial in identifying potential abuse situations. Screenings by healthcare professionals are essential because elder abuse is often underreported, and victims may be reluctant to disclose abuse, especially if the abuser is a family member on whom they depend. Professional, supportive, and non-judgmental questioning can help to create an environment where the elderly person feels safe to disclose any mistreatment.

The heart is composed of 2 pumps. the right side pumps blood to ________ and the left side pumps blood to ______.

Answers

Oxygen
Carbon dioxide

The right side of your heart receives oxygen-poor blood from your veins and pumps it to your lungs, where it picks up oxygen and gets rid of carbon dioxide. The left side of your heart receives oxygen-rich blood from your lungs and pumps it through your arteries to the rest of your body.

When you get a bunch of amino acids together you make a long change called?

Answers

a polypeptide 
Three nitrogen bases form an amino acid and many amino acids form a polypeptide.

The idea that Earth was the center of the universe is an example of _____ that has long been discarded.

Answers

The idea that Earth was the center of the universe is an example of hypothesis that has long been discarded. 

That Is The Awnser Please donate brainliest back Thanks
Geocentrism and it is an old concept that is no longer.The idea stems from Greek philosophy and astronomy..

You are the agricultural science consultant to a large corporate farm that grows 7,000 acres of wheat on land adjoining the mediterranean sea. just before the wheat matures, all the wells used for irrigation water run dry. the farm manager wants to irrigate the fields with water drawn from the mediterranean sea. from previous tests, you know that the solute potential of root tissues taken from wheat is -11.13 bars. you test the seawater and determine its solute potential to be -24.26 bars. what will you advise the farm manager and why

Answers

I will advise the farm manager not to use the sea water for irrigation as the sea water is of lower water potential than the roots of the wheat. If sea water is used to irrigate the fields, all wheat plants will die from dehydration as water will move out from the roots to the surrounding because a potential gradient is present between the root tissues and the soil.

Using Mediterranean seawater for irrigation is not advisable due to its high solute potential, which would cause water to move out of the wheat root tissues, leading to dehydration and potential harm to the crops.

The solute potential of the root tissues in wheat is -11.13 bars, and the seawater's solute potential is -24.26 bars. Osmosis dictates that water moves from areas of higher water potential to lower water potential. Given that the solute potential of seawater is significantly more negative than that of the wheat root tissues, irrigating with seawater would cause water to move out of the plant roots into the seawater, leading to dehydration and potential harm to the crops.

Therefore, I advise against using seawater for irrigation because it has a high solute concentration that will create a water stress situation for the wheat plants, ultimately hindering their growth and productivity.

Atomic radiation is useful for treating cancer because

Answers

Final answer:

Atomic radiation damages the DNA of cancer cells, inhibiting their ability to divide and grow. This leads to a reduction in the size of the tumor, and possibly, to the elimination of the cancer altogether.

Explanation:

Atomic radiation, more specifically, radiotherapy is useful in cancer treatment because it damages the DNA of cancer cells. The high-energy radiation particles (such as gamma rays or X rays) are targeted directly at the tumour, damaging the cancer cells' DNA and inhibiting their ability to divide and grow. Cancer cells are also less efficient in repairing this damage than healthy cells. As a result, they are more likely to die after radiation exposure, while the healthier cells around them may recover.

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Final answer:

Atomic radiation is beneficial in cancer treatment as it damages the DNA of the cells, thus preventing cell division and causing cell death. Techniques such as external beam radiation, brachytherapy and radiopharmaceuticals allow for the concentration of radiation in cancer cells while minimizing damage to healthy cells.

Explanation:

Atomic radiation is useful in treating cancer due to the use of radiotherapy and radioisotopes. Cancer cells reproduce rapidly which makes them sensitive to radiation. In radiotherapy, the goal is to damage the DNA of the cancer cells using high-energy radiation, preventing them from dividing and leading to their death.

There are two ways to administer radiation therapy: external beam radiation therapy, where the radiation is delivered by a machine outside the body, and internal radiation therapy (brachytherapy), where a radioactive substance is placed inside the body. In both scenarios, the aim is to maximize the therapeutic ratio - the ratio of cancer cells killed to normal cells killed.

Another method of using radiation in cancer treatment involves radiopharmaceuticals. These substances carry radioactive isotopes to the cancer cells, thus localizing the radiation in abnormal tissue. This technique is beneficial due to its ability to concentrate the radiation in the cancer cells, minimizing damage to healthy cells.

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Determining the time of ovulation is a complicated process which depends on many factors.

Answers

If the question is asking whether it is true or false, the answer is true. It is because not all women who have menstruation has the exact time when it comes to predicting or determine ovulation as there are factors considered and interrupts with these process that made it complicated and hard to determine.

What are the four classes of connective tissue and their general functions?

Answers

skin-block skin boundaries
muscle-give support
bone-protect and harden
joing-by ligaments, joints, tendons

Which hormone, produced by the thyroid gland, works opposite to parathyroid hormone (pth)?

Answers

Parathyroid Hormone (PTH) is a hormone that signals an increase in blood calcium (Ca2+) within into the bloodstream when below normal ranges. When blood calcium is within normal ranges Calcitonin is released from the thyroid to stop blood calcium from increasing thus maintaining equilibrium.

Which correctly lists the sequence of structures that action potentials must move through to excite skeletal muscle contraction?

Answers

To excite skeletal muscle contraction, the action potentials move from the axon of the neuron, then to the sarcolemma, and finally to the T tubules. 

Through the axon of the motor neuron (brain cell), electrical signals are transmitted from the brain, through the spinal cord, then to the muscles. The axon branches through the muscle and connects to the muscle fibers. The axons then interact with the folded sarcolemma of the muscle fibers to relay the "information" from the electrical signals. Then, this information is passed on to the T tubules, which are extensions of the sarcolemma, to eventually enable the movement (i.e. contraction) of the muscles.

The sequence of structures action potentials move through includes the sarcolemma, t-tubules, sarcoplasmic reticulum, and the actin and myosin filaments within the sarcomeres of the skeletal muscle, facilitating contraction.

The sequence of structures that action potentials must move through to excite skeletal muscle contraction is a multi-step process. Initially, the action potential is generated by the somatic motor division of the nervous system. This action potential travels down the motor neuron to the muscle fiber's sarcolemma where it continues as a wave of excitation. The action potential then enters the t-tubules and prompts the sarcoplasmic reticulum (SR) to release calcium ions (Ca++). The surge in Ca++ leads to a binding with the troponin-tropomyosin complex on the actin filaments, causing a conformational change that exposes myosin binding sites on the actin filament. Myosin heads then attach to these sites and pull the actin filaments, which powers the muscle contraction through the sliding filament theory of muscle contraction.

Because they share similar structures cells all carry out the same function true or false

Answers

False. Your body contains trillions of cells but they don'y all carry out the same function. You need different cells for different functions otherwise we probably wouldn't be alive. LOL 

Answer:

The correct answer will be option-false.

Explanation:

A cell is the structural and functional unit of an organism programmed to perform the different function of the organism.

The different parts of the body are made up of cells with the same structures called organelles but it is not necessary that the organs of the body will perform the same function. The case of heart cell and the muscle cell although contain the same organelle but perform different functions in the body.

Thus, false is the correct answer.

The pathway from dietary ________ to body fat is the most direct and most efficient for fat storage.

Answers

Fat !!!!!!!!!!!!! 100% sure

If blocks a and b of mass 10 kg and 6 kg respectively, are placed on the inclined plane and released, determine the force developed in the link. the coefficients of kinetic friction between the blocks and the inclined plane are a=0.1 and b=0.3. neglect the mass of the link. ( the incline is at 30 degrees up from the -x axis, the link connects block a and b and block a is futher up the incline than block b)

Answers

Refer answer on the picture below.

The force developed in the link is 6.37N.and this can be determined by forming the equation of motion in the vertical and horizontal direction.

Given :

Blocks a and b of mass 10 kg and 6 kg respectively, are placed on the inclined plane and released.The coefficients of kinetic friction between the blocks and the inclined plane are a=0.1 and b=0.3.Neglect the mass of the link.

Equation of motion is formed in order to determine the force developed in the link.

Equation of motion for block A in the vertical direction.

[tex]\rm N_A - 10\times 9.81 \times cos30^\circ = 10\times 0[/tex]

[tex]\rm N_A = 10\times 9.81 \times cos30^\circ[/tex]

[tex]\rm N_A = 84.96 \; N[/tex]

Equation of motion for block A in the horizontal direction.

[tex]\rm 10\times 9.81 \times sin30^\circ -0.1\times 84.96 -F = 10a[/tex]

49.05 - 8.496 - F = 10a

40.554 - F = 10a  

[tex]\rm \dfrac{40.554-F}{10}=a[/tex]         ---- (1)

Equation of motion for block B in the vertical direction.

[tex]\rm N_B - 6\times 9.81 \times cos30^\circ = 6\times 0[/tex]

[tex]\rm N_B = 6\times 9.81 \times cos30^\circ[/tex]

[tex]\rm N_B = 50.97 \; N[/tex]

Equation of motion for block B in the horizontal direction.

[tex]\rm 6\times 9.81 \times sin30^\circ -0.3\times 50.97 +F = 6a[/tex]

F + 14.14 = 6a   ---- (2)

Now, substitute the value of 'a' in equation (2).

[tex]\rm F + 14.14 = 6\times \dfrac{40.554-F}{10}[/tex]

5F + 70.7 = 121.662 - 3F

8F = 50.962

F = 6.37 N

So, the force developed in the link is 6.37N.

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The term for the skin surface supplied by a single afferent nerve is:

Answers

The answer is dermatome.
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