Genetics Practice

A cleft chin phenotype is dominant to no cleft. Which of the following genotypes is NOT a cleft chin?

Dimples are dominant to no dimples. Choose all of the genotypes that are dimple phenotypes.

Freckles are dominant to no freckles. A genotype that is heterozygous will have which phenotype?

Which of the following genotypes is homozygous dominant?

Which of the following genotypes is heterozygous?

The genotype, Pp, is _______.

The genotype, jj, is _______.

The genotype, KK, is

Which of the following genotypes is homozygous recessive?

In guinea pigs, the allele for short hair is dominant. What genotype would a heterozygous short-haired guinea pig have?

Green flowers are dominant to yellow flowers. If the parents (GG and gg) are crossed, what percentage of the offspring will have green flowers?

Green flowers are dominant to yellow flowers. If two heterozygous parents are crossed, what percentage of their offspring will be homozygous dominant?

Black fur is dominant to brown fur in dogs. A brown fur dog is crossed with a dog that is heterozygous. What percentage of the offspring will be black?

Black fur is dominant to brown fur in dogs. A brown fur dog is crossed with a dog that is homozygous dominant. What percentage of the offspring will be brown?