In one mammal species, black fur colour is dominant, whereas brown fur colour is recessive. Two black-furred parents have offspring, and all of the first group of young are black-furred. Later in the same year, these same parents have more offspring. One of the new offspring has brown fur. Which statement about fur colour is correct?
- ABoth parents are heterozygous.
- BOnly one of the parents is heterozygous.
- CBoth parents are homozygous.
- DOnly one of the parents is homozygous.