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What happened when Gregor Mendel crossed tall pea plants with short pea plants?
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heredity
Each offspring is a combination of its two parents, receiving some dominant traits from its mother and others from its father.
When Gregor Mendel crossed pure-breeding tall pea plants with short pea plants, the resulting first-generation (F1) hybrids were all tall. This demonstrated that the trait for tallness was dominant over the recessive trait of shortness.12
When these F1 hybrid plants were allowed to self-pollinate, the second generation (F2) showed both tall and short plants in a ratio of approximately 3:1. Mendel’s quantitative analysis of these results led him to conclude that hereditary traits are determined by discrete units (now known as genes) that exist in pairs and segregate during the formation of gametes. This discovery formed the basis of his law of segregation.1234