The genotypes of a husband and wife are IAIB x IAi. Among the blood types of their children, how many different genotypes and phenotypes are possible? a.4 genotypes; 3 phenotypes
b.3 genotypes; 3 phenotypes
c.4 genotypes; 4 phenotypes
d.3 genotypes; 4 phenotypes
e2 genotypes; 3 phenotypes

What function does the limb sever in each animal? how are the limb bones of the four animals similar? based on these similarities what can be inferred about the evolution of the four animals.

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.

The direct energy source that drives atp synthesis during respiratory oxidative phosphorylation is