Why do genes only make up a small percentage of DNA? A. We only use a small portion of DNA, because there aren't that many unique proteins.
B. It reduces the chances of genes being damaged.
C. It prevents cells from accidentally making the wrong protein.
D. The extra DNA will eventually be turned into genes as organisms evolve.

Por qué crees que los huevos con cáscara se llaman amnióticos?

Is a fossil fem that support wegener's hypothesis of continental drift a. gondwanded b. kannemerid c. mesosaurus d. glossopters

12) several teeth were found in an area of flat land covered with trees and plants. the teeth were examined by a paleontologist, and it was determined that the teeth came from a shark. they found many other shark teeth in this area. however, the people who discovered the teeth were puzzled, because there was no source of water near where the fossils were found. what is the paleontologist's best explanation for why the teeth were found in this area? a) sharks used to live on flat land. b) this area was once covered with salt water. c) this area was once covered with freshwater. d) someone buried the shark teeth deep in the ground.