Answer:
I think it's A but I'm not sure (viewpoint)
Humans' genomes are about 99.9% the same.
I would say immigration only.
emigration would theoretically reduce the genetic variation as unique individuals leave, but immigration would bring unique traits into circulation in an ecosystem.
I'm not super great at biogy tho so this might not be right... :)
Answer:
This is because of how reproduction works in humans. Male and female sex cells are formed by a process called meiosis, where the diploid chromosomes divide and separate. And so the ratio of male to female births is also 50:50.
Answer:
Hydrogen Bonds
Explanation:
The nitrogen bases are held together in the center of the molecule by Hydrogen Bonds. The type of sugar found in DNA is Deoxyribose.
