Multiple Choice
Use this information below to answer the following questions.
A large population of laboratory animals has been allowed to breed randomly for a number of generations. After several generations, 25% of the animals display a recessive trait (aa) , the same percentage as at the beginning of the breeding program. The rest of the animals show the dominant phenotype, with heterozygotes indistinguishable from the homozygous dominants.
-What is the most reasonable conclusion that can be drawn from the fact that the frequency of the recessive trait (aa) has not changed over time?
A) The population is undergoing genetic drift.
B) The two phenotypes are about equally adaptive under laboratory conditions.
C) The genotype AA is lethal.
D) There has been a high rate of mutation of allele A to allele a.
E) There has been sexual selection favouring allele a.
Correct Answer:
Verified
Correct Answer:
Verified
Q5: The following questions refer to the following
Q20: You sample a population of butterflies and
Q34: The following questions refer to the following
Q41: Most invertebrates have a cluster of ten
Q59: Use this information to answer the following
Q60: Use the following figure to answer the
Q63: The three main mechanisms that alter allele
Q63: Use the following information to answer the
Q66: If four of the original colonists died
Q74: In a very large population, a quantitative