Map distances (and recombination frequencies) are additive:
A) for all distances between genes in one chromosome.
B) for distances up to about 75 map units, after which recombination frequencies become higher than expected.
C) for distances up to about 50 map units, at which point recombination frequencies become higher than expected.
D) for distances up to about 25 map units, at which point recombination frequency becomes higher than expected.
E) for distances up to about 15 map units, at which point recombination frequency becomes lower than expected.
Correct Answer:
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