Question

Biology

Posted 6 months ago

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If two carriers (heterozygotes) have children, the probability that their first two children are affected by the trait is
Group of answer choices
$1 / 16$
$1 / 4$
$3 / 4$
$15 / 16$
```

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Answer from Sia

Posted 6 months ago

A

Key Concept

Probability of inheriting a recessive trait

Explanation

When two heterozygous carriers (Aa) have children, the probability of each child being affected by a recessive trait (aa) is $1/4$. The probability that both of their first two children are affected is $(1/4) \times (1/4) = 1/16$.

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