Which one of the following best describes codominance in genes' effects on children's growth and development?
a. One of the alleles associated with a particular physical characteristic is more influential in females; the other is more influential in males.
b. The two alleles associated with a particular physical characteristic both have some influence.
c. A dominant gene temporarily succumbs to a recessive gene's influence, typically as a result of poor nutrition.
d. Two or more recessive genes essentially overpower a dominant genesomething that happens only in males.
Question 2
The gene for red hair is a recessive gene. Luke has red hair, but neither of his biological parents has red hair. Given this information, we can reasonably guess that:
a. Luke's father has a red-hair gene, but his mother doesn't.
b. Luke's mother has a red-hair gene, but his father doesn't.
c. Each of his parents has one (but only one) red-hair gene.
d. Neither of his parents has a red-hair gene.
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