D. The discoveries confirmed many but not all of the classifications that were based on observable traits, and scientists revised classifications when necessary.
Red blood cells, I need a little bit more details to fulky know, please respond to me thanks
Answer:
The theory that all living organisms share the basic genetic components.
Explanation:
All living organisms store genetic information using the same molecules — DNA and RNA. Written in the genetic code of these molecules is compelling evidence of the shared ancestry of all living things.