Question

why are sex - linked traits more common in men than in women?
sex - linked traits
are caused by
mutations on the y
chromosome,
which is only
present in males.
women have a higher
mutation rate in sex -
linked genes, which
makes them less
likely to pass on
these traits to their
offspring.
women are less
likely to inherit
sex - linked
recessive alleles
because they have
two copies of the
x chromosome.
men only have one
x chromosome, so if
they inherit a sex -
linked recessive allele
on that x
chromosome, they
will express the trait.

Explanation:

Sex-linked recessive traits are carried on the X chromosome. Males have only one X chromosome, so if they inherit a single recessive allele for the trait on their X chromosome, they will express the trait. Females have two X chromosomes, so they need two copies of the recessive allele to express the trait, making it much less likely for them to show the trait. The correct options explain this dynamic.

Answer:

• Orange: Women are less likely to inherit sex-linked recessive alleles because they have two copies of the X chromosome.
• Teal: Men only have one X chromosome, so if they inherit a sex-linked recessive allele on that X chromosome, they will express the trait.