Colorblind?

[Anonymous]

i don't think kids learn colors until closer to three. i remember my son saying everything was red for a long time. probably learned other colors around 2.5....so i wouldn't worry yet. most developmental lists suggest it's usually around age 3.

[Anonymous]

Anonymous wrote:The genetics is simple on this, If her father is not colorblind, neither is she. A paternal grandfather carries his colorblindness on his one X. That X was not passed onto your husband (he got his Y from dad), So your husband isn't even a carrier of colorblindness, and a daughter needs to X's carrying.

Color blindess (at least red-green) is X linked so the mutated X chromosome would have to be inherited from both parents.

Mom would have to be a heterozygous, Xx, for it and Dad would have to be xY for it. Dad could have gotten his x from his dad (DD's grandfather). Do your basic medelian genetics/Punette Sq. and you should see there is a chance of colorblindness.

[Anonymous]

Do my basic medelian genetics/Punette Sq. ???? Are you serious?

It is my understanding that in order for DD to be colorblind, my husband would have to be colorblind (not just a carrier) and I would also have to be a carrier. My husband is not colorblind. I know not whether he is a carrier, but again, my understanding is that this would not be enough to get DD colorblind. And again, there is nothing in my family history to suggest that I would be a carrier for colorblindness -- though I suppose I can't definitively rule it out.

[Anonymous]

Anonymous wrote:

Mom would have to be a heterozygous, Xx, for it and Dad would have to be xY for it. Dad could have gotten his x from his dad (DD's grandfather). Do your basic medelian genetics/Punette Sq. and you should see there is a chance of colorblindness.

This is one of the shining moments of DCUM that keeps me coming back! I love that someone else remembers all the HS biology that I've forgotten! Except now I'm having nasty fruit fly flashbacks...