If gene exchange rate is 30% of two linked genes, then distance between these two genes is

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4.Principles of Inheritance and Variation

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If gene exchange rate is $30\%$ of the two linked genes, then the distance between these two genes is

A

$30$ unit

B

$15$ unit

C

$60$ unit

D

$45$ unit

Solution

(a) When the linked genes are quite close to each other,

than the percentage of gene exchange rate is low, and on the other hand when genes are some distance apart,

the percentage of crossing over would be high

i.e. rate of gene exchange is directly proportional to the distance between them.’

Standard 12

Biology

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