Using the picture of a dihybrid cross, what are the two traits being observed and how many possible phenotypes for the F2 generation of this cross?
Fur color and tail length, 2 different phenotypes
Fur length and tail length, 2 different phenotypes
Fur color and tail length, 4 different phenotypes
Fur length and tail length, 4 different phenotypes
Using the picture of a dihybrid cross, what are the two traits being observed and how many possible phenotypes for the F2 generation of this cross?
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The correct answer is Fur color and tail length, 4 different phenotypes.
Explanation: In a dihybrid cross that observes two traits, each trait typically has two alleles. For instance, if we consider fur color and tail length, each trait can be dominant or recessive. When you cross two individuals that are heterozygous for both traits (for example, AaBb x AaBb), you can use a Punnett square to find there are 16 possible combinations in the F2 generation, resulting in 4 distinct phenotypes (e.g., both traits dominant, one dominant and one recessive, and so on). Thus, the answer includes both traits and indicates there are four phenotypes resulting from their combination.
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