Recessive X-linked traits are more likely to be expressed in a male than a female because ....?

...males are haploid for the X chromosome, while females have two copies of X.


...males are more susceptible to both X-linked and Autosomal Chromosomal Disorders.


...the Y chromosome has many genes on it compared with the X chromosome.


None of the above.

Recessive X-linked traits are more likely to be expressed in a male than a female because ....?
The first.





Females carry two X chromosomes, so a recessive disease, like hemophilia, can be masked in females if the have a good copy of the gene.





Because males are XY, and don't carry a second X, X-linked traits are more likely to be expressed. There is no good copy to compensate for the bad allele.
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