Honestly you can get DNA by taking a piece of someone or just by them touching something.
Hope I helped and if you need more you could always ask me :)
-Dawn
ATP is very important. It transports the energy necessary for all cellular metabolic activities in living things.
Answer:
The correct answer would be gene flow.
Explanation:
Gene flow is explained as the transfer of genes from one population to another so there is an increase in their frequency of genes.
It is also called migration. The addition or loss of people can affect the frequencies of the gene pool even if no other evolutionary mechanisms working at the time.
Thus, the correct answer would be gene flow.