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NEET2019ZoologyPrinciples of Inheritance and VariationActual

What map unit (Centimorgan) is adopted in the construction of genetic maps?

Options

  1. AA unit of distance between two expressed genes, representing 10% cross over.
  2. BA unit of distance between two expressed genes, representing 100% cross over.
  3. CA unit of distance between genes on chromosomes, representing 1% cross over.
  4. DA unit of distance between genes on chromosomes, representing 50% cross over.

Correct answer

C. A unit of distance between genes on chromosomes, representing 1% cross over.

Step-by-step solution

1 map unit or centimorgan is equivalent to 1 % recombination between two genes. If was Sturtevant who first suggest that frequency of recombination can be used to depict relative distance between the genes. 10 % crossing over is known as Morgan (M)

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