Genetics as it applies to evolution, molecular biology, and medical aspects.

meaghan22
Garter
Posts: 1
Joined: Thu Apr 20, 2006 6:08 pm

Hi! Hopefully someone can anwer my question, which is this: My father is colorblind, and I am now having a child with a man who is colorblind. Is it 100% definite that our first child will be colorblind, male or female? Or is it only if the child is male? Also, are there different degrees of colorblindness?? Any help would be greatly appreciated! Thanks

Poison
Inland Taipan
Posts: 2322
Joined: Sun Jan 02, 2005 12:44 pm
Location: Turkey
Color blindness is a reccessive trait. Carried by X. The point is that are you color blind too? If your father is colorblind that means you are a carrier. If you have a child with a colorblind man that means both your son and daughter CAN be colorblind. You can not say 100%. Because, if you are just a carrier that means there is a chance of having normal children. You can try to solve this with a punnet square. First try and then feel free to ask the points that are not clear.

About degrees of colorbindness: I haven't heard about the "degrees" but, yes, there are different types. Have a look this:
http://en.wikipedia.org/wiki/Color_blindness
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LilKim
Coral
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Joined: Mon Mar 20, 2006 8:36 pm
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it's works out to 50% chance of colorblindness (boy or girl).

(if your female child is not colorblind.. she will also be a carrier too... just like you)

Different degrees of colorblindness? I don't know.. but, i know that there are different types of colorblindness...

Best wishes!

ajs
Garter
Posts: 10
Joined: Wed Mar 01, 2006 12:21 pm
X(A)X(a) x X(a)Y
you colourblind father

Possible childs worked with punnet:
1. X(A)X(a) Carrier female
2. X(A)Y Normal man
3. X(a)X(a) Colourblind female
4. X(a)Y Colourblind man
there are possibielities equally important

zami'87.
Coral
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Location: Serbia