Which of the following statements are true? i. each white blood cell contains millions of hemoglobin molecules. ii. in a sample of blood, there are more red blood cells than white blood cells. iii. hiv destroys red blood cells. iv. all blood cells come from one pool of stem cells. a. ii and iv only b. i and iv only c. ii and iii only d. i, iii, and iv only e. i, ii, and iv only

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.