Question

what is a racessive allele in monohybrid cross for Red and White coloured allele​

Answer 1

Answer:

Certain traits are passed down from parents to their offspring. For example, two black guinea pigs will likely have offspring with black coats. But sometimes they produce a brown guinea pig. 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. In the mid-1800s Mendel crossed pea plants and studied their offspring. He concluded that each plant had two factors responsible for determining a trait, with one factor coming from each of its parents. These factors today are called alleles.

A pair of alleles—one from each parent—makes up the genotype for a trait. The way the trait appears is its phenotype. In pea plants, purebred purple flowers have a genotype with two purple alleles, which produces a phenotype of purple petals. Purebred white flowers have a genotype of two white alleles, which displays the white phenotype. But what happens when you cross purebred purple flowers with purebred white flowers?

We can use a tool called a Punnett square to find out. Like Mendel, we’ll first cross purebred purple flowers with purebred white flowers. These are the parental generation. Their offspring—the first filial, or F1, generation—each receive one purple allele and one white allele. Since all of the offspring have the purple phenotype, this tells us that the purple allele is dominant to the white allele.

Explanation:

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