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Principles of Inheritance and Variation question

2019 · Q3
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Principles of Inheritance and Variation question

2019 · Q3

NEETBiologyPrinciples of Inheritance and VariationMCQ+4 / −1
What map unit (Centimorgan) is adopted in the construction of genetic maps?
  1. A
    A unit of distance between genes on chromosomes, representing 1% cross over.
  2. B
    A unit of distance between genes on chromosomes, representing 50% cross over.
  3. C
    A unit of distance between two expressed genes, representing 10% cross over.
  4. D
    A unit of distance between two expressed genes, representing 100% cross over.
View written solutionFree

Correct answer: A

A centimorgan or map unit is a unit for measuring genetic linkage. It is defined as the distance between chromosome positions (also termed loci or markers) for which the expected average number of intervening chromosomal crossovers in a single generation is 1 percent.

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