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Principles Of Inheritance And Variation

Question
CBSEENBI12047369
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The frequency of crossing-over occurring between two genes located on the same chromosome depends on

  • length of the chromosome

  • position of the centromere

  • activities of two genes

  • distance between two genes

Solution

D.

distance between two genes

The frequency of crossing-over occurring between the two genes located on the same chromosome is only directly proportional to the distance between the two genes. Hence, the closer the two genes are to one another on a chromosome, the greater will be their chance of being inherited together. 

However, genes located farther away from each other on same chromosome are more likely to be separated during recombination. Other factors giving in the options such as length of chromosome, position of centromere and activities of two genes does not have any relation with the crossing-over and recombination.

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