Question #6423567Single Choice

Biology

Question

In a species of bird, the shape of the beak is determined by two genes. Gene A has two alleles, and Gene B has three alleles. Additionally, the presence of a certain parasite in the bird's environment can affect the beak shape. This genetic system is an exception to the two-factor genotype determination because:

Options

Gene B has more than two alleles.

The parasite is an environmental factor that influences the phenotype.

The combination of the number of alleles for both genes and the environmental factor makes it more complex.

All of the above.

Answer & Analysis

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