In pea plants, tall plant height is dominant over short plant height. if there are 200 short plants in the f2 generation from a cross that followed mendel’s methods, about how many plants will be tall in that generation? 200 300 600 1,000?

Question: In pea plants, tall plant height is dominant over short plant height. if there are 200 short plants in the f2 generation from a cross that followed mendel’s methods, about how many plants will be tall in that generation? 200 300 600 1,000?

In pea plants, tall plant height is a trait that is controlled by a dominant allele, while short plant height is controlled by a recessive allele. This means that a plant will be tall if it inherits at least one dominant allele from its parents, and it will be short only if it inherits two recessive alleles. When Mendel crossed two pure-breeding plants, one tall and one short, he obtained all tall plants in the F1 generation. This is because each F1 plant inherited one dominant allele from the tall parent and one recessive allele from the short parent. However, when he crossed two F1 plants, he obtained a 3:1 ratio of tall to short plants in the F2 generation. This is because each F1 plant had a 50% chance of passing on either allele to its offspring, and the possible combinations of alleles in the F2 generation were TT, Tt, tT, and tt. Only the tt plants were short, while the rest were tall. Therefore, the probability of getting a short plant in the F2 generation was 25%, or 1/4.

To answer the question, we need to use this probability to estimate how many plants will be tall in the F2 generation. If there are 200 short plants in the F2 generation, then they represent 25% of the total number of plants. To find the total number of plants, we can divide 200 by 0.25, which gives us 800. This means that there are 800 plants in the F2 generation, and 200 of them are short. To find how many plants are tall, we can subtract 200 from 800, which gives us 600. Therefore, there are about 600 tall plants in the F2 generation from a cross that followed Mendel's methods. The correct answer is C) 600.

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