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The distance between two genes can be calculated by examining the frequency of phenotypic classes of...

The distance between two genes can be calculated by examining the frequency of phenotypic classes of the offspring which are recombinant (differing from parents).

a)True

b)False

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Answer #1

The answer is true.

Frequency of recombination or percentage of recombination can be used to measure map distance that is the distance between two genes. The frequcency of crossing over or percentage of recombination between two loci is directly related to physical distance between two loci.

You can determine the frequcency of crossing over/percentage of recombination by the following formula-

Frequency of recombination = (Number of recombinant offspring / Total number of progeny) 100

Suppose you get frequency of recombination 30 then the distance between two genes will be 30 map unit. Thus recombination frequency depicts distance between two genes.

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