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Question
If two genes are showing 50% recombinant frequency then which of the following statements is incorrect?
If two genes are showing 50% recombinant frequency then which of the following statements is incorrect?
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Solution
The correct option is B Genes are tightly linked
When the genes are linked tightly show close to 100% parental types and 0% recombinants. The genes that are close to each other have a tendency to be more linked than those that are farther. The more the linkage lesser will be the recombination frequency and vice-a-versa. Hence linkage decreases the frequency of the recombinants. A recombinant frequency of 50 percent means that the genes are present on the same chromosome but are widely separated hence they may have undergone more than one crossovers in every meiosis. They may also be unlinked due to their presence on separate chromosomes. These genes show independent assortment. Thus the correct answer is option B.
When the genes are linked tightly show close to 100% parental types and 0% recombinants. The genes that are close to each other have a tendency to be more linked than those that are farther. The more the linkage lesser will be the recombination frequency and vice-a-versa. Hence linkage decreases the frequency of the recombinants. A recombinant frequency of 50 percent means that the genes are present on the same chromosome but are widely separated hence they may have undergone more than one crossovers in every meiosis. They may also be unlinked due to their presence on separate chromosomes. These genes show independent assortment. Thus the correct answer is option B.
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