When an organism joins a new population, its genes become part of the new population's gene pool. How does this gene flow affect populations? Gene flow between populations has no effect on the gene pool.
O Gene flow between populations increases genetic diversity over time.
O Gene flow between populations decreases genetic diversity over time.
Gene flow increases the chance for reproductive isolation which can cause new species to form.
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Joe is breeding cockroaches in his dorm room. he finds that the average wing length in his population of cockroaches is 4 cm. he chooses the six cockroaches that have the largest wings; the average wing length among these selected cockroaches is 10 cm. joe interbreeds these selected cockroaches. from earlier studies, he knows that the narrow-sense heritability for wing length in his population of cockroaches is 0.6. a. calculate the selection differential and expected response to selection for wing length in these cockroaches. b. what should be the average wing length of the progeny of the selected cockroaches?

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.

These are the components of the reservoirs of carbon that are exchanged in our environment.