12.3

Question 1

situation in which the phenotypes produced by both alleles are completely expressed

Answer 1

Codominance

Question 2

situation in which one allele is not completely dominant other another allele

Answer 2

Incomplete dominance

Question 3

gene that has more than two alleles

Answer 3

Multiple alleles

Question 4

Trait controlled by two or more genes

Answer 4

polygenic trait