according to the principle of segregation, a. dominant genes will always mask recessive genesb. gene pairs for a trait are combined during fertilizationc. gene pairs for a trait are split during the formation of gametesd. traits are determined by heritable factors called genes and genes

In order to clone adult animals, scientists typically begin with a(n)

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs

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.