Answer:
Founders Effect
Explanation:
Occurs when a few individuals start, or found a new population. by chance, allele frequencies of the founders maybe different from allele frequencies of the population they left.
In humans, one allele of the APOE gene, called APOE-c2, can result in a high tolerance of cholesterol Cholesterol is a vital substance for humans but may lead to heart disease in an older adult with a history of high cholesterol diets. High cholesterol diets are becoming more prevalent in the United States. Currently only about 2% of humans carry the APOE-12 allele Which of the following states a valid null hypothesis about the future distribution of APOE alleles in future generations in the United States? i. The APOE 2 ailele was the result of chance mutations so it is not possible to predict now its frequency will change in the future ii. As high cholesterol diets become more common in the United States, individuals with the APOE-42 allele will have a better survival rate from heart disease than those without the allele, so the allele will increase in frequency iii. The low frequency of the APOE-42 allele indicates it is probably a recessive allele, so it will become less frequent as the dominant allele becomes more frequent iv. The variant protects an individual from a condition that is only common among humans beyond reproductive age, so the frequency of the allele will likely not change much in the future because it is not influenced by natural selection
As high cholesterol diets become more common, individuals with the APOE-42 allele will have a better survival rate, so the allele will increase in frequency.
What is natural selection?Natural selection is the main evolutionary force by which evolution (change) occurs over time.
An adaptive allele is a given gene variant that confers an evolutionary advantage to the individual.
In this case, the APOE-42 allele confers an evolutionary advantage and therefore it will increase its frequency in the population.
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Homologous recombination can be used in the lab to replace a gene of interest with a selection marker. What is required for the selection marker to specifically replace the gene of interest?.
Answer:
The sequences surrounding the gene of interest will be placed around the selection marker.
If a missense mutation results in the substitution of the nonpolar amino acid valine with the similarly nonpolar amino acid leucine, the mutation is said to be
Answer:
a missence mutation with a substitute
1. Which of the following are located in the
nuclei on chromosomes?
A) genes
C) carbohydrates
B) pedigrees
D) zygotes
Answer:
Your answer would be A. GENES
Explanation:
What caused these layers of rock to deform?
Answer:
tectonic forces
Explanation:
Rocks that were originally deposited in horizontal layers can subsequently deform by tectonic forces into folds and faults. Folds constitute the twists and bends in rocks. Faults are planes of detachment resulting when rocks on either side of the displacement slip past one another.
During embryonic development, which structure temporarily takes on the function of the lungs?.
Answer:
The placenta
Explanation:
placenta temporarily takes on the function of the lungs during embryonic development.
What does the countercurrent mechanism accomplish in the nephron loop?.
Answer:
The counter-current multiplier or the countercurrent mechanism is used to concentrate urine in the kidneys by the nephrons of the human excretory system. The nephrons involved in the formation of concentrated urine extend all the way from the cortex of the kidney to the medulla and are accompanied by vasa recta.
The observation that NMDA receptor blockade interferes with performance in the Morris water maze provides an example of a _______ supporting the connection between LTP and memory.
The observation that NMDA receptor blockade interferes with performance in the Morris water maze provides an example of a somatic intervention experiment supporting the connection between LTP and memory.
What is a somatic intervention experiment?Somatic Intervention is a technique that allows you to recognize and interrupt habitual patterns (such as anxiety, anger, stress, or fear), release bodily tension and associated memories, and move forward in a more calm and focused manner.
You will learn a new language through Somatic Intervention.
Thus, the correct option is somatic intervention experiment.
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cells secrete hydrochloric acid as well as intrinsic factor which is necessary for the absorption of
Is necessary for the absorption of vitamin B12 in the small intestine. Chief cells, Located primarily in the basal areas of gastric glands are chief cells, which secrete pepsinogen, the inactive proenzyme form of pepsin.
Which vitamin requires intrinsic factor which is secreted by the stomach in order to be absorbed?Intrinsic factor is a protein that aids intestines absorb vitamin B12. It is created by cells in the stomach lining.
Thus, Chief cells,Located primarily in the basal areas of gastric glands are chief cells, which perspire pepsinogen, the inactive proenzyme form of pepsin.
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A cell with 18 chromosomes undergoes meiosis. How many chromosomes would each daughter cell contains?
Answer:
18
Explanation:
A drawing of a cat is an example of which type of model?
1-D
2-D
3-D
4-D
The drawing of a cat is an example of a 3-D drawing as applied in biology.
What is 3-D drawing?A 3-D drawing is such the height, depth and the width of the object ios shown. Three dimemsional drawings are common in architechture as well as in biology.
Hence, the drawing of a cat is an example of a 3-D drawing as applied in biology.
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It had not rained and yet, when Braelin walked across the grass he noticed that
the grass was wet. What is a reasonable answer for the reason.
Answer:
The condensation in the air from the humidity of the night settles on the grass, now in the form of dew..
Explanation:
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In earthworms, what do the nerve cord, the setae, the circular muscles, and the metanephridia have in common?.
They are serially repeated in the segments of the body. has programmed cell death and therefore is useful in cancer and AIDS research.
COLLABORATE Brainstorm several human activities common in urban areas, with your partner. Rank these activities from the most to the least sustainable.
please help
Sustainable human activities promote the environment while non-sustainable human activities degrade the environment.
What are some human activities in urban areas?Human activities refers to the various activities carried out by humans in their day to day to help them survive or adapt to their envrionment.
Human activities may either be sustainable or non-sustainable to then and the environment
Some human activities common in urban areas include:
agriculture music and dance sports and gamesdriving of vehiclesThe most sustainable of these activities is agriculture while the least sustainable is driving of vehicles.
Therefore, sustainable human activities promote the environment while non-sustainable activities degrade the environment.
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How can professionals increase their levels of stress as a result of personal work habits?
Working at a steady rate
Developing work ethics
Procrastinating
Setting personal goals
What is the first step in the immediate aftermath of an exposure to a biohazard involving a percutaneous injury (through the skin)
The first step after exposure to a biohazard is too thoroughly wash the affected region with soap and water.
What is a biohazard?A biohazard is a possibly infectious agent that may cause severe harm to the organism is affects. Biohazard protocols are very strict due to the likelihood that their infection rates are often very high and are paired with severe symptoms. The first step of exposed through a cut or other method involving the skin is to wash it thoroughly with soap and water and seek medical attention.
Therefore, we can confirm that the first step after exposure to a biohazard is too thoroughly wash the affected region with soap and water.
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list of some aspects of cell theory is below.
1. All living cells must have a cell wall. 2. All living cells require oxygen for survival. 3. The basic unit of life is a cell
1) Which of these aspects are included in cell theory?
es
A) 1 only
B) 1 and 3
C 2 and 3
D) 3 only
Answer:
the answer is D
Explanation:
Answer: D
Explanation:
What should the student say to the astronaut to explain the shape of the planets' orbits around the Sun? In your answer, discuss distance from the Sun and the shape of the orbits. Enter your answer in the box provided
The shape of the planets' orbits around the Sun in this scenario can be referred to as an elliptical shape.
What is an Elliptical shape?This is similar to the shape of an ellipse in which the elongated circle stretches into an oval.
The shape of the orbits of the planets are all nearly circular as a result of the distance of the planets from the sun being millions of miles apart.
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The forelimbs of humans, cats, and bats have a number of detailed similarities in their construction. What best explains these similarities?.
7. According to the fossil record, which group of organisms has existed for the greatest length of time? (1) gastropods (3) mammals
(2) corals (4) vascular plants
The group of organisms that has existed for the greatest length of time is : ( 1 ) Gastropods
GastropodsAccording to fossil records the group of organisms that have existed for the greatest length of time in the options given below is the gastropods . The gastropods have existed for more than 500 million years ago. They are one of the longest existing group of organsims which consist of snail-like invertebrates.
Hence we can conclude that The group of organisms that has existed for the greatest length of time is Gastropods.
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breakout edu composting catastrophe please help! thank you!
The compost species required for breaking down compost-able garbage are: earthworms, slugs, beetle and fruit fly.
What is compost?Compost refers to waste composed of dead and decaying leaves and organic matter which is used as manure to enrich the soil.
Composting helps to remove organic waste from the environment.
Compost requires some species if organisms which help to degrade the waste matter.
Some compost species which can be used to treat the problem of waste disposal include earthworms, slugs, beetle and fruit fly.
Therefore, the composition of compost species for breaking down compost-able garbage is: earthworms, slugs, beetle and fruit fly.
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What function do chloroplasts perform?
They use light energy to make food for the plant. They control the activities in the cell. They produce proteins for the cell. They provide temporary storage for the plant’s water. Mark this and return
Answer:
Explanation:
Chloroplasts work to convert light energy of the Sun into sugars that can be used by cells. It is like a solar panel that changes sunlight energy into electric energy. The entire process is called photosynthesis and it all depends on the little green chlorophyll molecules in each chloroplast.
Answer: A
Explanation: EDG 2022
Suppose humans accidentally introduced a non-native species to a can of warriors bird to the region if these birds feeder schools will be on large fish which group or groups of organisms will be negatively impacted by the change
Which genres are used in the leader in the mirror? check all that apply.
Answer:
Poetry and Essay are used in the leader of mirror.
Answer: A, D
Explanation:
Hello people ~
While planning for an artificial hybridization programme involving dioecious plants, which of the following steps would not be relevant
a) Emasculation
b) Collection of pollen
c) Dusting of pollen on stigma
d) Bagging of female flower
Answer:
Emasculation
Explanation:
Emasculation is also called aritificial or scientific hybridizationIn this two different species combine or hybridise with. each other to form a superior speciesOption A
What is blood typing and why is it so important? (include type of genetics, how written, reason why important, information on transfusions)
Answer:
Blood typing is a fast and easy way to ensure that you receive the right kind of blood during surgery or after an injury. If you're given incompatible blood, it can lead to blood clumping, or agglutination, which can be fatal. Blood typing is especially important for pregnant people.
Explanation:
ANSWER ASAP: In a population of 500 squirrels, the per capita birth rate in a particular period is 0.08and the per capita death rate is 0.12.
a.What is the per capita growth rate of the population? Round to the nearest hundredth. b.What is the actual number of squirrels that die during this particular period? Round to the nearest whole number.
c.What is the actual number of squirrels that are born during this period? Round to the nearest whole number.
Answer:
A. -0.04
B.40
C. 60
Explanation:
.08-.12 =-.04
.08*500=40
,12*500 = 60
What part of the brain is the most inclusive?
Midbrain
Pons
Cerebellum
Cerebrum
The most inclusive part of the brain is the midbrain which is found at the back of the skull.
What is the function of the midbrain?The midbrain is the shortest segment of the brainstem, it interposes between the pons and the diencephalon and most of it is found on the posterior surface of the skull. Its upper limit, which separates it from the brain, is a horizontal plane between the mammillary bodies, belonging to the diencephalon.
With this information, we can conclude that the most inclusive part of the brain is the midbrain which is found at the back of the skull.
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A bacterium is unable to transport lactose into the cell to be broken down. Which gene is likely mutated in this bacterium
Answer:
lacY is the awnser
Explanation:
The area inhabited by a population is known as its:.
The area inhabited by a population is known as its geographic distribution.
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