Multiple choice

A couple seek molecular testing for prenatal diagnosis of an autosomal recessive condition. The haplotype in coupling with the mutation is found in both parents by analysis of the parents and the affected offsprings. Analysis of chorionic villus tissue from the embryo reveals that the embryo inherited only the maternal haplotype in coupling with the mutation. What would you counsel them?

  1. The developing embryo is most likely a carrier.

  2. The developing embryo could be affected if recombination occurred in the father.

  3. The developing embryo could be homozygous unaffected if recombination occurred in the mother.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

According to the question, all of the above statements are possible.

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