Multiple choice

Which of the following genes have lethal effect?

  1. Gene controlling the production of hemoglobin

  2. Defective gene causing haemophilia

  3. Dominant allele of gene controlling fur colour in mice in homozygous state

  4. Recessive allele of gene causing sickle-celled anaemia in heterozygous state
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Recessive allele of gene causing sickle-celled anaemia in heterozygous state have lethal effects.

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