A. an explanation based on prior scientific knowledge or observations
i just took the quiz and got the answer correct.
Answer:
it is a cell membrane (d)
Hope this helps!!!
A vestigial organ, something that has yet to fall prey to evolution, but no longer serves a purpose, or the purpose it used to serve.
They are related mother to child. mtDNA is DNA contained in the mitochondria, and does not change from mother to child. So, it could be a grandma and her grandchild if she had a daughter, or a mother and her child.