Question 39 • 2025-2026_MDCPS_2000315_Biology_1_A-CR
Mendel studied traits that had two alternative forms, corresponding to two alleles, and he used plants that could self-pollinate. So a suitable different plant would have only two alleles for a trait. A plant that cannot self-pollinate would make it harder to control breeding, and having only recessive alleles would not provide contrasting forms to study.
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