In codominance, one gene is recessive to two dominant genes; in incomplete dominance, all genes are recessive. c. In codominance, the two alleles cooperate to make an intermediate phenotype; in incomplete dominance, the heterozygote shows the recessive phenotype. d.
Polygenic traits are influenced by nutrition and diet , whereas multifactorial traits are not. b. Polygenic traits are influenced by the number of traumatic life events, whereas multifactorial traits are influenced by the levels of brain chemicals. c.
a. a genetic disorder (such as hemophilia or color blindness) caused by a faulty allele b. an egg that can develop into a child without fertilization by a sperm c. aneuploid eggs or sperm d. a sperm that can develop into a child without fertilization with an egg e. an increased risk of clinical depression. c.