Answer: Genetic variation describes naturally occurring genetic differences among individuals of the same species. Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation. New genetic variation can be created within generations in a population, so a population with rapid reproduction rates will probably have high genetic variation. And there are the reasons.
The pyloric valve control food movement from the stomach into the small intestine.
Answer:
TACGTACGTTAC (so the second one)
Hydrogen bonds are weaker than covalent bonds.