20. The trait of a striped pattern is dominant over no stripes in a species of fish. Ifa male fish and female fish are both heterozygous and they have 380 offspring,
approximately how many of those offspring would you expect to have the phenotype of
a striped pattern?
A. O
B. 95
C. 190
D. 285

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition. b) one-fourth of the daughters of an affected man would have this condition. c) one-half of the daughters of an affected father and a carrier mother could have this condition. d) only if a woman is xxx could she have this condition.