Question

A plant can produce either purple flowers or white flowers. The purple flower color is dominant over the white flower color. What is the ratio of the offspring with purple flowers to the total number of offspring if two plants that are heterozygous for purple flowers are crossed?

Answer 1

One or two purple alleles in flowering pea plants will result in purple blooms.  so there will be 50 percent ratio. This is because one purple gene causes enough pigment to be synthesized to produce all purple flowers.

What is dominant allele?

A dominant allele is a variant of a gene that causes a specific trait even when other alleles are present. A functional protein is usually encoded by a dominant allele. Because one copy of the allele produces enough enzyme to furnish a cell with plenty of a given product, it is dominant.

As a result, the purple allele has a dominant role, while the white allele has a recessive role.

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