Suppose that a woman with normal blood clotting mates with a man who also has normal blood clotting, and that their first child is a boy who has X-linked hemophilia. Which statement best predicts the outcomes of their mating?

a. All of the children will have hemophilia.
b. None of the children should have hemophilia.
c. All of the boys and half of the girls will have hemophilia.
d. Half of the boys and none of the girls will have hemophilia.


Answer: d. Half of the boys and none of the girls will have hemophilia.

Biology & Microbiology

You might also like to view...

The binding of a positive allosteric regulator molecule will

A. decrease the ability of the substrate to bind to the allosteric site. B. decrease the ability of the substrate to bind to the allosteric site. C. increase the ability of the substrate to bind to the catalytic site. D. decrease the ability of the substrate to bind to the catalytic site.

Biology & Microbiology

In your own words, describe one step in the walking cycle.

What will be an ideal response?

Biology & Microbiology

A motor neuron and all the muscle fibers under

its control is a ____ unit. a. neuromuscular b. movement c. muscle d. motor e. coordination

Biology & Microbiology

Unlike red blood cells, white blood cells are capable of leaving blood vessels to enter the tissue fluid between cells

Indicate whether the statement is true or false

Biology & Microbiology