Choose all the answers that apply.

A karyotype for Pat Williams shows a mutated X chromosome, but a normal Y chromosome. What is Pat?

male

female

a carrier for a sex-linked disorder

a person with a sex-linked disorder

Male

A person with a sex-linked disorder

Pat is a male since males have one X chromosome and one Y chromosome. Sex-linked disorders are caused by mutations or a defective gene on X chromosome. Since males only have one X chromosome, they only possess one allele for a sex-linked gene, which in this case is mutated, so Pat will have the sex-linked disorder.