Ascientist has discovered a new gene in oysters. oysters with the dominant allele for disease resistance 'r' have been found to tolerate polluted waters better than oysters with the recessive 'r' allele. what term is used to describe an oyster that has two identical dominant alleles (rr) for this gene? a) genetic hybrid b) homozygous dominant c) heterozygous dominant d) heterozyous recessive

What is the best-known carbohydrate?

Explain why scientists use the word dominant for certain traits.

Suppose a particular species of tulip plant has three alleles for the gene that codes for flower color. the cr allele produces red tulips, the cp allele produces purple tulips, and the cw allele produces white tulips. cr is dominant over cp and cw, and cp is dominant over cw. for each of the following crosses, determine the expected ratio of offspring for each flower color. cr cp x cp cw cr cw x cp cw 1 red: 1 purple : 0 white, 1 red: 2 purple: 1 white, 2 red: 1 purple 1 white, 1 red: 3 purple : 0 white, 2 red: 0 purple : 2 white, 2 red: 2 purple : 0 white