Zoology - Principles of Inheritance and Variation Question with Solution | TestHub
What will be the linkage strength present between two genes A & B, which are 6 cM far from each other on a chromosome?
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Solution:
The intergene distance on the chromosomes cannot be measured in the customary units employed in light microscopy; geneticists use an arbitrary unit to measure the map unit, to describe distances between linked genes. A map unit is equal to 1 per cent of crossovers (recombinants); that is, it represents the linear distance along the chromosome for which a recombination frequency of 1 per cent is observed. These distances can also be expressed in Morgan units; one Morgan unit represents 100 per cent crossing over. So here linkage strength is present between two genes A & B is 94%.(because they are 6 cM far from each other in a chromosome)
