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Crossing over between homologous chromosome never exceeds
Answer & Solution
Correct Answer:
Option
A
Crossing over between homologous chromosomes never exceeds 50%.
The recombination frequency between two genes cannot be greater than 50% because a random assortment of genes generates 50% recombination.
Non-linked genes produce 1 : 1 parental to non-parental. Thus, the recombination frequency would be non-parental/total, i.e. $$\frac{1}{{1 + 1}} = 50\% .$$
The recombination frequency between two genes cannot be greater than 50% because a random assortment of genes generates 50% recombination.
Non-linked genes produce 1 : 1 parental to non-parental. Thus, the recombination frequency would be non-parental/total, i.e. $$\frac{1}{{1 + 1}} = 50\% .$$
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