The answer is to your question is A
De-extinction is a good idea. Using genetic science for reanimation may help adapt existing ecosystems to extreme changes in the environment, like global warming, and potentially reverse them, writes George Church in Scientific American
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Antibodies are released into the bloodstream and attached themselves to foreign antigens such as toxins, bacteria and foreign cells. The attachment of an antibody to an antigen marks the pair for destruction.
This helps maintain homeostasis by providing the body protection against disease and infection.
Answer:
<h3>Biologists study humans, plants, animals, and the environments in which they live. They may conduct their studies--human medical research, plant research, animal research, environmental system research--at the cellular level or the ecosystem level or anywhere in between.</h3>
Punnett square-
R r
R RR Rr
r Rr rr
So RR, Rr, and rr are possible outcomes.
The answer is D.
