PLEASE HELP! Hemophilia is a recessive, X-linked disorder. If a male child is born with hemophilia and neither the mother nor the father has hemophilia, which of the following statements is most likely true?

1. the father is the carrier

2. the child’s sister will have hemophilia

3. all answers are correct

4. the mother is the carrier

4

Explanation:

Because the mom may have a recessive x when she was born so she carries it. Males can't be carriers.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

the supermassive black hole is in the middle of the galaxy.