In a sweet pea crossing experiment involving two dihybrid plants, the F2 generation had many more offspring with the phenotypes of purple flowers P, long pollen L and red flowers p, round pollen l than expected from independent assortment. This is because a. in sweet peas, the alleles for flower color and pollen shape are on the same chromosome. b. there were few recombination

Question

Biology

Danielle Pratt

27 December, 19:29

In a sweet pea crossing experiment involving two dihybrid plants, the F2 generation had many more offspring with the phenotypes of purple flowers P, long pollen L and red flowers p, round pollen l than expected from independent assortment. This is because a. in sweet peas, the alleles for flower color and pollen shape are on the same chromosome. b. there were few recombination

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Answers (1)

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Tanya Robertson · Answer 1

a. in sweet peas, the alleles for flower color and pollen shape are on the same chromosome.

Explanation:

This is directly caused by linkage of the alleles representing the two genes.

When two genes on the same chromosome are linked, it means their loci are close to each other on the chromosome. Consequently, their inheritance do not obey the law of independent assortment of genes as described by Mendel. Gametes with parental allele configuration will be more frequent when compared to recombinant gametes.

The correct answer is a.