How many kinds of gametes will be expected from an individual with the genotype PpCcTTRr? A)16 B)1 C)8 D)4 E)2

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Quizplus · Accepted Answer

The individual has 2 alleles for each of the 4 genes (PpCcTTRr), which means that each gene can produce two different kinds of gametes. To find the total number of possible gametes, multiply the number of possible gametes for each gene together: 2 x 2 x 2 x 2 = 16. However, we need to remember that the capital letters represent dominant alleles, while the lowercase letters represent recessive alleles. Therefore, the individual can only produce gametes containing either the dominant or the recessive allele for each gene, but not both. Therefore, the number of possible gametes is reduced in half, making the answer 8.

How Many Kinds of Gametes Will Be Expected from an Individual