Heather was surprised to discover she suffered from red-green col...

Question

Heather was surprised to discover she suffered from red-green colorblindness. She told her biology professor, who said, 'Your father is colorblind, too, right?' How did her professor know this? Why did her professor not say the same thing to the colorblind males in the class?

Accepted Answer

Hello everyone and welcome to today's video. So a couple conceives a daughter who is blue cone monochromatic. What is a true genotype of the parents for color blindness. Well remember that these blue cone monochromatic is an X linked recessive trait. So for the daughter to have blue to be blue cone monochromatic, she must be affected on both of her sex chromosomes. So remember that the daughter received one chromosome or one sex chromosomes from the dad and another one from the mom. If the daughter received one sex chromosomes that was affected or one X chromosomes that was affected from the dad, this means that the dad has there. It's only X chromosome affected so that that must be affected And when it comes to the mom or the one that donated this second X chromosome. The mom could either be fully affected and donate this one or she could just be affected in one of them and still be able to donate this one into the daughter. We really don't know. We cannot predict this. However, we can predict that the dad is going to be affected because he is the one that's donating. It's only X chromosomes which is affected now because that is affected. We can eliminate answer choice is A B and see. And this all leaves us with answer choice. D. Both The father and the mother are color brain. We are sure that the father is color brain and the mother. There is a possibility of her being color blind or Herbie in a carrier. Either way, this is the answer to that best describes the question, so we're going to highlight it as a final answer to our question. I really hope this video helped you, and I hope to see you on the next one.

Heather was surprised to discover she suffered from red-green colorblindness. She told her biology professor, who said, 'Your father is colorblind, too, right?' How did her professor know this? Why did her professor not say the same thing to the colorblind males in the class?

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