Which of the following is likely to be the result of polygen

Which of the following is likely to be the result of polygenic inheritance? freckles an extra finger human height ABO blood type Genetic drift is the result of__. natural selection chance a large gene pool environmental variation Gene flow is accomplished by__. migration sexual recombination mutation natural selection What does evolutionary fitness measure? physical health longevity relative reproductive success population size Which of the following is an example of directional selection? The birth weight at which newborn humans are most likely to survive and the average weight of new born humans are about the same. There is an increase in antibiotic-resistant strains of bacteria. There is an increase in the number of different breeds of dog. Garter snakes with different coloration patterns behave differently when threatened. Which of the following is an example of disruptive selection? The birth weight at which newborn humans are most likely to survive and the average weight

Solution

7 c.Human height is an example of polygenic inheritence.

8 b. is due to a chance as the allele frequencies within a population change by chance alone as a result of sampling error from generation to generation.

9.a due to migration. Migration into and out of the population may be responsible for marked change in the allele frequencies.

10c.relative reproductive sucess.

It refers to the probability that the line of descent from an individual with a specific trait will not die out and is maintained.