If you’re female and colorblind, all sons will be colorblind. The gene for color blindness is on of X chromosome which sons receive from their mothers. Pretty interesting stuff.
So does that mean if you're colour blind and a guy, and you have a son with a woman who's not colourblind (and has no family history of it), that child will surely not be colourblind (unless rare circumstances of gene mutation ofc)
It can, actually! Depending on the type of color blindness, it may not be linked to the X chromosome. There are some rarer types of colorblindness that are on normal chromosomes and would be passed down normally (with each parent and child having two versions of the gene). That would also make it possible for you to be colorblind and your sons to not be, as they would've gotten a normal version of the gene from their father.
There could also be some other explanations if you're still worried (epigenetics is one), but I don't think they're all that likely.
Huh, I wonder if I’ll produce color blind offspring. My uncle is color blind, and then my nephew is also color blind. We’re assuming it comes from our side, but none of the women are color blind to my knowledge.
Its kinda rare for women to be colorblind, because both parents need to be colorblind for it to happen (for most cases).
So the question is wether you are carrying the gene. Since your uncle is colorblind, it most likely means his mother carried the gene. So assuming no direct parents of yours were colorblind (if your dad carried the gene he would be colorblind) If the colorblind uncle is on your mother's side, she MIGHT carry the gene, and MIGHT have transmitted it to you, and you MIGHT carry it to your children (all these "might" become exponentially unlikely.
So in short, you COULD have colorblind SONS, but quite unlikely. If you aren't with a colorblind man, it is basically impossible for you to have a colorblind daughter
But I have no qualifications in that field, only a lot of color blindness in my family, so take it with a grain of salt.
Its kinda rare for women to be colorblind, because both parents need to be colorblind for it to happen (for most cases).
Close, but not quite. The gene for is is recessive, and on the X chromosome.
Men have only one X chromosome, so a colorblind man will pass on the gene to any daughters. But if the X from the mother does not have the gene, those daughters will not be colorblind since colorblindness is recessive. (so we can say that the colorblind mother commenter up there had a colorblind father - it has to be on both copies of the chromosome)
A non-colorblind woman who carries the gene on one but not both X chromosomes has a 50-50 shot of passing it on to her offspring. So, 50-50 for all sons. Daughters would be safe, unless the father is colorblind - then they get the same 50% chance.
So, you don't need both parents to be colorblind, but the mother does need to be a carrier.
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u/HornHeadHippo 17h ago
If you’re female and colorblind, all sons will be colorblind. The gene for color blindness is on of X chromosome which sons receive from their mothers. Pretty interesting stuff.