Question 4
A study found that children with light-coloured eyes are likely to have parents with light-coloured eyes. On this basis, can we say anything about whether the light eye colour trait is dominant or recessive? Why or why not?

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Solution

This information is not sufficient. For considering a trait as dominant or recessive, we need data of at least three generations. This data is about only two generations. Moreover, unless we know the nature of these two variants of traits it cannot be predicted which is dominant and which is recessive because recessive traits appear when both the parents each contribute recessive allele.

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Dominant and Recessive Alleles

Standard X Biology

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Question 4 A study found that children with light-coloured eyes are likely to have parents with light-coloured eyes. On this basis, can we say anything about whether the light eye colour trait is dominant or recessive? Why or why not?

Question 4
A study found that children with light-coloured eyes are likely to have parents with light-coloured eyes. On this basis, can we say anything about whether the light eye colour trait is dominant or recessive? Why or why not?