Individuals iii-3 and iii-4 are expecting their first child when they become aware that they both have a family history of this recessive condition. as their genetic counselor, you can calculate the probability that they are carriers and that their child will be affected with the condition.

1.) the probability that iii- 3 is a carrier (rr) =

2.) the probability that iii - 4 is a carrier (rr) =

3.) the probability that iv - 1 will be affected (rr) =

options are 1/4, 1/2, 1/16, 1/3, 3/4, 2/3, 1/12, 1/6

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.

Some substances but not other can cross the (blank) membrane of a cell

There are few cells in the body that do not undergo mitosis: most somatic cells divide regularly, some more than others. take for example the cells that line the digestive tract. these cells must be frequently replaced because they are constantly eroded by the movement of food through the tract. what mechanism(s) is/are in place to ensure that these cells are exact copies of the mother cell