If a man expresses an X-linked recessive trait, we can draw the following conclusion:A. His father ...

If a man expresses an X-linked recessive trait, we can draw the following conclusion:A.
   His father carried the mutation.
  B. His father transmitted the trait to his son.
  C. His mother did not carry the mutation gene.
  D. His mother was heterozygous or homozygous for the trait.
  E. All his brothers will also show the trait.

Question 2

In autosomal dominant inheritance
  A. the trait often skips generations.
  B. about one-fourth of the progeny in a pedigree will show the trait.
  C. two affected individuals may have unaffected children.
  D. males are more affected than females.
  E. a deleterious phenotype is always produced.