In butterflies, the gene for black wings (B) is dominant to the gene for blue wings (b). For which of the following parental genotypes would 100% of offspring be expected to be blue?

Brown fur is dominant to white fur in a species of rabbit and is represented with the alleles "B" and "b".

What are the resulting percentages of genotypes of a cross between a homozygous dominant parent and a heterozygous parent?

The allele for black feet in a species of duck is dominant to the allele for brown feet. What are the phenotypes of the offspring from the cross shown in the punnet square above?

In poodles, the allele for black fur (B) is dominant to the gene for brown fur (b). Two poodles are crossed. One poodle is homozygous for black fur, and the other is heterozygous. What percentage of the offspring are expected to have black fur?

The allele for blue eyes is "t" while the allele for brown eyes is "T". What percentage of offspring produced by two parents with blue eyes would also have blue eyes?

Polycystic Kidney Disease (PKD) is a disease that can cause kidney failure. This disease is usually caused by a dominant allele. What is the chance that a child will have PKD if the father is unaffected and the mother is heterozygous for PKD?

The parents genotypes from this cross are ______.

A dog gives birth to 5 puppies. What percentage of chromosomes does each puppy share with its mother?

The allele for longer necks in giraffes is dominant to the allele for shorter necks.

What are the phenotypes of the cross between two homozygous parents, one with a long neck and one with a short neck?

In a population of rats at a pet store, the allele for black fur is dominant (B) and the allele for brown fur is recessive (b). A rat with the genotype BB is crossed with a rat with the genotype Bb. Which describes the phenotype of the parent rats?