Question
Two sisters are born from a father who has blue eyes and a mother who has brown eyes. One sister has blue eyes, and the other sister has brown eyes.. Which of the following best explains this difference in eye color? Each sister inherited a different combination of alleles from their parents that determined their eye color. The environment caused the alleles to be expressed in different ways making the sisters eye colors different. One of the sisters inherited all of her alleles from the mother, and the other sister inherited only from the father. The sister witr the blue eyes had only one allele for determining eye color, and the sister with browr eyes had two.
Answer
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Emerson
Master · Tutor for 5 years
Answer
Each sister inherited a different combination of alleles from their parents that determined their eye color.
Explanation
Eye color in humans is determined by multiple genes inherited from both parents. The genetic makeup, consisting of alleles from each parent, results in the variations in eye color. Each parent contributes one allele for each gene involved in determining eye color. In this scenario, the sisters inherited different combinations of these alleles, leading to one having blue eyes and the other having brown eyes. This difference is not due to environmental factors or receiving alleles from only one parent. The most straightforward explanation is the inheritance of alleles from both parents, aligning with typical genetic inheritance patterns.