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Question

Two heterozygous parents are crossed. If the two loci are linked what would be the distribution of phenotypic features in F1 generation for a dibybrid cross?

Prabhat Rajore · Accepted Answer

If the two loci are linked then they are inherited together and no crossing over between them takes place. Thus if we take an example of a cross between yellow body and white eyes and wild type parent in a Drosophila will produce wild type and yellow white progenies. It is because yellow bodied and white eyed genes are linked. Therefore, they are inherited together in progenies. Due to linkage the percentage of the parental type is 98.7% while those of recombinants is 1.3%.

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Principles Of Inheritance And Variation

Two heterozygous parents are crossed. If the two loci are linked what would be the distribution of phenotypic features in F₁ generation for a dibybrid cross?

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