What are the possible genotypes and phenotypes of the offspring: both parents have achondroplasia (they are heterozygous) and are carriers for diastrophic dysplasia? In what ratios of the phenotypes?

What happens when the cell copies its chromosomes

The tubes transporting minerals and water upward are called ?

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.