The following figure shows three generations in one of Mendel's experiments.According to the data in this figure,Mendel's F₂ generation contains many more purple flowers than white flowers.Which of the following is the best explanation of this observation? A) Three-quarters of the offspring must receive the white allele. B) The chance of an individual offspring receiving a white allele is only 25 percent. C) The probability of any individual offspring receiving at least one copy of the purple allele is 75 percent. D) The white allele is only dominant in about 25 percent of the offspring that inherit it.

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Quizplus · Accepted Answer

This observation suggests that the purple allele is dominant, and therefore any individual offspring that receives at least one copy of the purple allele will express the purple color trait. Since the white allele is recessive, an individual offspring must receive two copies of the white allele to exhibit the white color trait. Therefore, the probability of any individual offspring receiving at least one copy of the purple allele is 75 percent, and this explains why Mendel's F₂ generation contains many more purple flowers than white flowers.

The Following Figure Shows Three Generations in One of Mendel's