Which statements describe incomplete dominance? Select three options. A: Traits are usually dominant.

B: Traits are neither dominant nor recessive.

C: Offspring exhibit an intermediate form of alleles from the parents.

D: Both alleles, one from each parent, are expressed in offspring.

E: Incomplete dominance involves the interaction of two alleles.

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.