Question

A woman with a genetic disease marries a man who does not carry the disease. It is not possible for their children to carry the disease. The disease must be

a) sex - linked

b) recessive

c) dominant

d) cause by an extra chromosome

my answer is recessive

Answer 1

To carry the disease means that it is in the genotype but not the phenotype. That <I>would</I> happen with a recessive gene. It will occur.