In pea plants, tall plant height is dominant over short plant height. If there are 200 short plants in the cap f 2 generation from a cross that followed Mendel’s methods, about how many plants will be tall in that generation?

In an F2 generation from a typical Mendelian cross, tall and short plants are expected in a 3:1 ratio because tallness is dominant. If 200 short plants represent one part of that ratio, the number of tall plants is 3 × 200 = 600. The correct choice is 600.

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