![]() ![]() A pair of alleles-one from each parent-makes up the genotype for a trait. He concluded that each plant had two factors responsible for determining a trait, with one factor coming from each of its parents. In the mid-1800s Mendel crossed pea plants and studied their offspring. How does this happen? The first person to show experimentally how certain traits are passed from parent to offspring was an Austrian monk named Gregor Mendel. But sometimes they produce a brown guinea pig. ![]() For example, two black guinea pigs will likely have offspring with black coats.
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