Genotypes and Alleles Concepts

A trait made up of two of the same alleles is called what?

• Homozygous

• Heterozygous

• Dominant

• Recessive

A trait made up of two different alleles is called what?

• Homozygous

• Heterozygous

• Purebred

• Hybrid

Which of the following genotypes is homozygous dominant?

• Tt

• tt

• DD

• Ff

Which of the following genotypes is heterozygous?

• BB

• dd

• Tt

• SS