Hemophilia is a blood clotting disorder that is a sex-linked trait carried on the x chromosome. if a woman with hemophilia and a man without the disorder have two sons and two daughters, how many of their children would have hemophilia?

Compare and contrast the adaptations of free-living flatworms and parasitic flatworms

Where in the body can you find chemoreceptors? a. on the skin and ears, to detect pressure, touch, motion, and sound b. on the retina, to detect a single photon of light c. on the skin, to detect temperature or specific chemicals d. on the tongue and in the nose, to detect taste or odor

The first amino acid of a new polypeptide chain is