If both parents are heterozygous for a trait, the probability that an offspring will be recessive for that trait is
Answer Details
If both parents are heterozygous for a trait, it means that each parent has one dominant allele and one recessive allele for that trait. When these two parents mate, their offspring have a 25% chance of inheriting two recessive alleles (one from each parent), which will result in the expression of the recessive trait. This means that the probability that an offspring will be recessive for that trait is 1/4 or 25%. Therefore, option C (1/4) is the correct answer.