Which of the following is TRUE about genetic linkage? Which of the following is TRUE about genetic linkage? There are fewer gametes than expected with mutant alleles. There are fewer gametes than expected with recessive alleles. There are fewer gametes than expected with allele combinations that are different from the parental combinations. There are fewer gametes than expected with allele combinations that are the same as the parental combinations. There are fewer gametes than expected with dominant alleles.

Question

Biology

Jack Gardner

14 September, 23:29

Which of the following is TRUE about genetic linkage? Which of the following is TRUE about genetic linkage? There are fewer gametes than expected with mutant alleles. There are fewer gametes than expected with recessive alleles. There are fewer gametes than expected with allele combinations that are different from the parental combinations. There are fewer gametes than expected with allele combinations that are the same as the parental combinations. There are fewer gametes than expected with dominant alleles.

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Janae Skinner · Answer 1

There are fewer gametes than expected with allele combinations that are different from the parental combinations.

Explanation:

Two genes are linked if they are located in the same chromosome. In this case, they do not assort independently: the alleles located in the same chromosome will have a tendency to be transmitted together.

That happens because the shorter the distance between two genes, the probability of a crossing over event decreases and, therefore, the resulting gametes will show a lower percentage than expected of recombinant genotypes.