The forensic scientist can assume that the number of adenine is always equal to the number of thymine, according to the base pair rule. Adenine matches with the other purine pair, thymine because it is the only thing to which it could have a hydrogen bond with.
It was plants. Plants used photosynthesis, basically the sun's energy. And other animals ate the plants, and other animals ate the animals that ate the plant.
Explanation:
first blank is; Mitral valve.
2nd blank is; Left Ventricle
<span>The evolution of a long neck in giraffes is an example of natural selection in that the giraffes with long necks would be able to eat more leaves from higher trees and thus be more successful.</span>
Answer:
D. A mutation causing uncontrolled cell division
Explanation:
Cell division is controlled by various mechanisms. Any mutations in the genes regulating the cell division lead to uncontrolled cell division. Loss of control over the process of cell division leads to the formation of tumors.
These tumors may cause cancer if they are transformed into malignant tumors. Hence, a mutation that causes loss of control over cell division is harmful.
