What makes a pure substance different from a heterogeneous mixture? a) the components of a pure substance are mixed unevenly instead of evenly within the pure substance. b)insoluble instead of soluble particles are suspended within the pure substance. c)two liquids that normally are not mixable are mixed in a heterogeneous mixture. d)the components of a pure substance are single elements or compounds instead of a mixture of compounds.

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.