[Campbell Biology P.318] In the example of flower color, the purple allele is dominant and t... | Practice Question

In the example of flower color, the purple allele is dominant and the white allele is recessive. If a purple-flowered offspring inherits one purple allele and one white allele, what determines its appearance?

  • A: The two alleles blend to create a light purple color.
  • B: The dominant allele (purple) determines the appearance.
  • C: The recessive allele (white) determines the appearance.
  • D: Both alleles are expressed, resulting in purple and white spots.

Explanation

The diagram text states: 'When the two alleles are different, one allele here, purple determines the appearance.' This is the principle of dominance in Mendelian genetics.