An athlete who trains at high elevation will produce additional red blood cells
ID: 92224 • Letter: A
Question
An athlete who trains at high elevation will produce additional red blood cells in response to the lower concentration of oxygen in the air. Which of the following is true? a. Her genes for blood cell production will have mutated. b. She will pass on this trait to her children. c. The human species will have evolved. d. This has no effect on the gene pool e. Her children, conceived after training, will have a higher than normal number of red blood cells. A mutation occurs in one of your lung cells. Which of the following is true? a. you have evolved to be better adapted to your environment b. you will soon die because most mutations are lethal c. you will be sterile and no longer be able to have children d. the human species will have evolved because this mutation will be passed on to your children e. this mutation does not affect the human gene pool because it will not be passed on to offspring The many species of Galapagos finches were each adapted to eating different foods. This is an example of: a. Gene flow b. Adaptive radiation c. Stabilizing selection d. Intraspecific competition e. Polyploidy A chance event, such as a hurricane, occurred that caused a population to lose many individuals (they died). As a result the population lost alleles because of: a. mutation b. migration c. selection d. genetic driftExplanation / Answer
19(d) There will be no effect on gene pool.Because these changes are not permanent.As soon as the athelete will come to sea level, the immature RBC's will die .
20(e) because it will be a somatic mutation which occur in body cells (cells that do not make gametes) and not passed on to future generations
21(b) Adaptive radiation. The process, whereby species evolve rapidly to exploit empty ecospace, is known as adaptive radiation.The ecological niches exert the selection pressures that push the populations in various directions. On various islands, finch species have become adapted for different diets: seeds, insects, flowers, the blood of seabirds, and leaves.
22(d) Genetic drift- because alleles are lost due to random sampling and events which result in disappearance of organism due to death.
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