What is the difference between xylem and phloem?

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.

Plz ! what does it mean for an allele to be dominant?