Why are recessive X-linked traits seen more often in human males than in human f

Question

Why are recessive X-linked traits seen more often in human males than in human females? (Select all that apply.)

Males have an X chromosome, but females do not.

Actually, X-linked traits are seen more often in females than in males, because they have two X chromosomes.

Males don’t have a second X chromosome to mask the effects of the first one.

This phenomenon is due to X-inactivation.

While females would need two of these alleles to express the recessive phenotype, males only need one.

Sperm are more likely to carry an X chromosome than a Y chromosome.

Explanation / Answer

ANSWER:

Recessive X-linked traits seen more often in human males than in human females

1.Males don’t have a second X chromosome to mask the effects of the first one.This phenomenon is due to X-inactivation

2.While females would need two of these alleles to express the recessive phenotype, males only need one.

Females contain two X chromosomes while males contain one X chromosome and one Y chromosome. Females inherit X linked traits while males express both X-linked and Y-linked traits.So males are hemizygous for for autosomal inherited genes.

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