D: Is the correct answer. I just took the test and it was correct.
Answer:
6 offsprings with white fur
Explanation:
The gene involved here codes for fur colour in mice where the allele for brown fur (B) is dominant over the allele for white fur (b) i.e. the B allele will mask the expression of b allele in an heterozygous state (Bb).
Since allele B is dominant, in an heterozygous state (Bb), the mice will be brown-furred. Hence in a cross between two Bb parents, a phenotypic ratio of 1:2:1 will be produced where;
1 is BB (homozygous brown fur), 2 is Bb (heterozygotic brown fur) and 1 is bb (homozygous white fur).
Hence, 1/4 × 100= 25% offsprings will be white furred. If 24 mice result, 25/100 × 24 = 6 offsprings will be white.
Answer:
Ee Ee ee ee 50/50 on having either droopy ears or straight
Explanation:
Answer:
Coevolution
Explanation:
Coevolution is a process in which two species evolve together because they exert selective pressures mutually. This means that one of the species changes genetically in response to a genetic change in another species. Thus, both species reciprocally affect each other's evolution. These genetic changes, which go hand in hand, are reflected in the phenotypes, that is, in the morphological traits of the species.
The coevolution of plants (i.e the orchid) and pollinators (i.e the moth) is a typical example of coevolution. The flowering plant adapt to a pollinator, which in turn adapts to the plant. In this case, the nectar tube and the tongue of the moth coevolved together and the two species benefit from that. The orchid guarantees the dispersion of its pollen while the moth guarantees its food.