What trait does a hemizygous male inherit from his normal mother?

What trait does a hemizygous male inherit from his normal mother?

• A. Hemophilia allele
• B. Normal allele
• C. Color blindness allele
• D. Any X-linked trait

Answer: (B)

A hemizygous male refers to a male who has only one copy of a gene located on the X chromosome, which is typical since males possess one X and one Y chromosome. In terms of inheritance, this means that for any trait that is determined by genes on the X chromosome, a male will express whatever allele is present on his single X chromosome. Since the question specifies that the male inherits from his normal mother, we can conclude that he receives a normal allele from her. Mothers pass one of their X chromosomes to their sons. If the mother is normal (not carrying any alleles for hemophilia, color blindness, or any other X-linked recessive trait), she can only pass on the normal allele for any traits that are carried on the X chromosome. Thus, in this context, the trait that the hemizygous male inherits from his normal mother is a normal allele. This understanding is crucial for comprehending X-linked inheritance patterns, especially when dealing with hemizygous males and their mothers.

A hemizygous male refers to a male who has only one copy of a gene located on the X chromosome, which is typical since males possess one X and one Y chromosome. In terms of inheritance, this means that for any trait that is determined by genes on the X chromosome, a male will express whatever allele is present on his single X chromosome.

Since the question specifies that the male inherits from his normal mother, we can conclude that he receives a normal allele from her. Mothers pass one of their X chromosomes to their sons. If the mother is normal (not carrying any alleles for hemophilia, color blindness, or any other X-linked recessive trait), she can only pass on the normal allele for any traits that are carried on the X chromosome.

Thus, in this context, the trait that the hemizygous male inherits from his normal mother is a normal allele. This understanding is crucial for comprehending X-linked inheritance patterns, especially when dealing with hemizygous males and their mothers.