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NEET2008ZoologyPrinciples of Inheritance and VariationActual

The distance between two genes in a chromosome is measured in cross-over units which represent

Options

  1. Aratio of crossing over between them
  2. Bpercentage of crossing over between them
  3. Cnumber of crossing over between them
  4. Dnone of these.

Correct answer

B. percentage of crossing over between them

Step-by-step solution

The physical distance between two genes determines both the strength of the linkage and the frequency of the crossing over between two genes. The strength of the linkage increases with the closeness of the two genes. On the other hand the frequency of crossing over increases with the increase in the physical distance between the two genes.

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