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Karolina [17]
3 years ago
7

What was discovered in the 1930s about genes that helped us understand evolution better.

Biology
1 answer:
CaHeK987 [17]3 years ago
6 0
The idea of crossing over or genetic variation occurs. please give this brainliest!
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PLEASE HELP ASAP!!! WILL MARK BRAINLIEST!!!
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