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Gregor Mendel peas

In one experiment, Mendel cross-pollinated smooth yellow pea plants with wrinkly green peas. (The organisms that are used as the original mating in an experiment are called the parental generation and are marked by P in science textbooks). Every single pea in the first generation crop (marked as f1) was as yellow and as round as was the yellow, round parent. Somehow, yellow completely dominated green and round dominated wrinkly.

Mendel learned from this that there are two kinds of traits - dominant and recessive. In this case, the dominant traits are the yellow color and the round shape since they show up at the expense of the green color and the wrinkly shape. He also learned that the inheritance of each trait is determined by "units" or "factors" - now called genes.


Gregor Mendel peas
Gregor Mendel peas


Gregor Mendel peas
Gregor Mendel peas

Gregor Mendel peas
Gregor Mendel peas

Gregor Mendel peas
Gregor Mendel peas

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