Answer:
I believe the answer is C
Answer:
The Y chromosome is an accurate indicator of a person's external sex organs.
Explanation:
Since females have two X chromosomes while males have one X and one Y chromosome, if you are aware of the presence of a Y chromosome you can safely assume that a person is a male. Therefore, you can assume what external sex organs a male has.
Laboratory helps you identify things rather than the others using controlled variables
Answer:
Mitochondria provides energy to the cell
