Short hair (L) is dominant to long hair (l).If a short-haired animal of unknown origin is crossed with a long-haired animal and they produce one long-haired and one short-haired offspring, this indicates that

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Quizplus · Accepted Answer

If the short-haired animal were pure-breeding, all offspring would have short hair. However, the fact that they produced a long-haired offspring indicates that the short-haired animal carries the recessive allele for long hair (heterozygous), meaning it is not pure-breeding. The long-haired animal's breeding status cannot be determined from this information alone.

Short Hair (L) Is Dominant to Long Hair (L)