It is threatening the Arctic Tundra Biomes By Melting The Ice....Love
The answer is, different versions of the same gene are called alleles
Answer:
Control group remains unchanged.
Explanation:
For example if you are trying to see if watering plants with Pepsi is better.
Your experiment plant would get watered with Pepsi.
Your control plant would get watered with water. (Control groups serve as a reference to compare in the experiment)