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

Difficult

A

A unit of distance between genes on chromosomes, representing 50% cross over.
B

A unit of distance between two expressed genes, representing 10% cross over.
C

A unit of distance between two expressed genes, representing 100% cross over.
D

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

Solution

Map unit is a number that corresponds to a recombination frequency of one percent. It is unit of distance between genes on chromosomes, representing 1% cross over.
0.01 RF (Recombination frequency) = 1% RC (recombination) = 1 map unit distance = 1 centi Morgan (cM).
10 cM = 1 deci Morgan (dM).

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