A family has four children, two girls and two boys. One girl and one boy are color-blind. Are their parents color-blind?

Question

anonymous · Answer

Their parents are not colorblind but carry the recessive gene for color-blindness. If their parents were color-blind then all of their children would be, not just two.

anonymous · Answer

THANK YOU

anonymous · Answer

No problem

anonymous · Answer

IS IT POSSIBLE IF THE DAD IS COLOR BLIND AND THE MOM IS RECESSIVE?

anonymous · Answer

Hm lets see. I'm going to make a punnett square. If the mom is recessive it would be bb if the dad is color blind it would either be BB or Bb.

anonymous · Answer

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So if the dad were colorblind but heterozygous then yes it is possible but not if he is homozygous colorblind.