Answer:
The correct answer is A.
Explanation:
A mutagen changes the level of mutations that occur in the DNA either by affecting it physically or chemically. This helps researchers create different organisms with altered phenotypes according to what the research needs so that the genes can be investigated further under a controlled environment.
So the answer is A.
I hope this helps.
Because of photosynthesis
Rebound means <span>bounce back through the air after hitting a hard surface or object</span>
Lungs, claws/nails, fur, and mammary glands. The rat is most closely related to the dove.
