Question

Four sisters begin attending your school. One has brown hair and brown eyes. Another has brown hair and blue eyes. The third also has blue eyes, but blond hair. The fourth has blond hair, too, but she has brown eyes. Explain how the principle of independent segregation accounts for these sisters having four different phenotypes for two traits.

Answer 1

The Law of Independent Assortment/ Segregation states that different genes for different traits have no dependence on one another when it comes to transfer of these genetic traits from the parents to the offspring.

Answer 2

The fourth has blond hair, too, but she has brown eyes. Explain how the principle of independent segregation accounts for these sisters having four different phenotypes for two traits.

Answer: The way that the principle of independent segregation accounts for these sisters having four different phenotypes for two traits is that if If their parents are heterozygous for both traits, the genes and alleles segregate independently, resulting in all possible phenotypic combinations: dominant-dominant, dominant-recessive, recessive-dominant, and recessive-recessive.

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