Multiple choice

Kavita is homozygous normal but her husband is heterozygous for a genetically inherited recessive trait. The probability of having a normal child is

  1. 1 out of 4

  2. 2 out of 4

  3. 3 out of 4

  4. 4 out of 4
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All of the children will be healthy since none of them can be homozygous recessive (aa). However, there will be a 50% chance at each birth that the children will be carriers (Aa). The remaining 50% will be homozygous dominant (AA).

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