Homozygous vs Heterozygous Genotype

What is a homozygous trait?

• A trait made up of two different alleles.

• A trait made up of two of the same alleles.

• A trait that is always dominant.

• A trait that is always recessive.

Which of the following genotypes represents a heterozygous trait?

• TT

• bb

• Ff

• DD

In a certain species, yellow body color (Y) is dominant over blue (y). If an organism has the genotype Yy, what will its body color be?

• Blue

• Yellow

• Green

• Both yellow and blue

In a certain species, stubby nose (l) is recessive to long nose (L). What is the genotype for a stubby nose?

• LL

• Ll

• ll

• L_