In males, a single X chromosome ensures that any gene located on it is expressed, while females, having two X chromosomes, require a mutant allele on both chromosomes for phenotypic expression. If the mutant allele is present on only one X chromosome in females, they become carriers withou

Question

In males, a single X chromosome ensures that any gene located on it is expressed, while females, having two X chromosomes, require a mutant allele on both chromosomes for phenotypic expression. If the mutant allele is present on only one X chromosome in females, they become carriers without showing symptoms. Sublethal conditions cannot occur in males under this scenario.

Accepted Answer

Incorrect. The statement is false because sublethal conditions can arise in males if the gene on the single X chromosome is lethal or causes severe effects. Males lack a second X chromosome to compensate for the defective gene.

Solution

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