There are two types of pea plants: those that produce round seeds and those that produce wrinkled seeds. A single gene controls which type of seed a pea plant will produce.

An experiment shows that pea plants containing an allele for wrinkled seeds may still produce round seeds.

Based on this information, we can conclude that the allele for wrinkled seeds in pea plants is _______.
A.
heterozygous
B.
recessive
C.
dominant
D.
homozygous