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The chromosome maps are not accurate maps because(1) Crossing over frequency is higher than recombination frequency(2) One crossing over interferes and increases the frequency of nearby crossing over(3) Crossing over frequency decreases towards the ends of chromosome(4) Heterochromation increases crossing over

david goyla , 5 Years ago
Grade 12th pass
anser 1 Answers
Simran Vinaik

Last Activity: 5 Years ago

Ans is 2) as linkage chromosome maps do not exactly depict the physical distance amongst genes because:
(i) Interference of one cross-over to the occurrence of another near it by reducing its frequency.
(ii) Heterochromatin reduces the incidence of crossing over.

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