What is in blood that makes the different blood types ? A) The type of enzyme(s) on the surface of the blood cell
B) The type of DNA inside
C) The chemical makeup of the blood molecule
D) The shape of the blood cell

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

Plants that have reproductive structures called cones are?

Plz ! for many generations farmers in north america have been choosing to cross corn plants with large ears of corn each year this results in the new generation of plants also growing large ears of corn. what is the technique called? a. selective breeding. b. natural selection. c. mitosis. d. asexual budding.