Plant Genetics In 1865, Gregor Mendel suggesteda theory of inheritance based on the

Chapter 4, Problem 64

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Plant Genetics In 1865, Gregor Mendel suggesteda theory of inheritance based on the science ofgenetics. He identified heterozygous individuals for flower color that had two alleles (one r recessivewhite color allele and one R dominant red colorallele). When these individuals were mated, 3/4 of theoffspring were observed to have red flowers and 1/4had white flowers. The table summarizes this mating;each parent gives one of its alleles to form the gene ofthe offspring.Parent 2Parent 1 r Rr rr rRR Rr RRWe assume that each parent is equally likely to giveeither of the two alleles and that, if either one or twoof the alleles in a pair is dominant (R), the offspringwill have red flowers.a. What is the probability that an offspring in this matinghas at least one dominant allele?b. What is the probability that an offspring has at leastone recessive allele?c. What is the probability that an offspring has onerecessive allele, given that the offspring has redflowers?

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