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How many percent sons will be color blind if father is colourblind?
Wiki User
∙ 13y ago
Colour perception is carried on the X chromosome. Boys are XY, Girls are XX so in girls, colour perception is enhanced. If colour perception is lost on the X chromosome in boys, the effect is severe and effects between 1 in 12 to 1 in 20 boys. In girls the likelihood of both chromosomes being defective is very slight so colour perception problems in girls are very rare indeed (1 in over 200).
Wiki User
∙ 15y ago
Wiki User
∙ 13y agocolour blindness is recessive X linked males only have 1 X chromosome and males pass on their Y chromosome to their sons
they would only be colour blind if the mother had a copy of an affected X chromosome that they inherited - if she was a carrier then 50/50 chance the son would be colour blind. If she was herself colourblind all her sons would be.
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What is the probability of color blindness if the father is color blind and the mother carries the trait?
All daughters are normal, half the sons are color blind. The above answer is incorrect. Half of the daughters are color blind and half of the sons are color blind. Since the father always donates color blindness, it is up to the mother in each case (in the son's case, the father is irrelevant) to determine if the child is color blind or not. Since she is a carrier, the chance is 50-50.
What percent of men are color blind?
It is known that the defective gene is carried on the X chromosome, so males are almost exclusively the victim, and white males make up practically the entire percentage of victims. 8 percent of all males are color blind.
Which parental pair could produce female with color blindness?
X' = color blindnessX'X'-- X --X'Yis a cross that could lead to a color blind female as the mother is homozygous recessive and the father's X chromosome is the recessive color blind trait.
Did john Dalton have a nickname?
He is color blind and he named color blindness of red, blue, purple, and yellow. he named it daltonisum.
How do you know you are the color blind ones and the people who are color blind aren't?
I don't think that there is an answer to that question
What would the genotypes of parents have to be to have a color blind daughter?
The daughter's father would have to have been colour blind, and the mother would need the inheritive gene from her father (the mother doesn't nessecarily need to show it, just have a colourblind father) in order for a female to end up actually colourblind. However, it's extremely rare.
If a color blind man has a color blind daughter then the mother has to be color blind as well?
The father has to be colorblind for the daughter to be colorblind because both X chromosomes must have the colorblindness gene in females because the colorblind gene is recessive. If only the mother is color deficient, then she merely passes on the gene to one of the X chromosomes in a female. If both the mother and father are both colorblind, then both X chromosomes in the female are effected and the female is colorblind. There are two scenarios in which a daughter may be born colorblind. 1. The father is colorblind and the mother is a carrier of the colorblind gene. The daughter will be either colorblind or a carrier of the colorblind gene. 2. The father and mother are both colorblind. If this is the case, then all of the children will be born colorblind.
How do you know if you are color blind?
I actually am color blind. And I found out that I was color blind a long time ago when I looked in a book. There was a color blind test on one of the pages. It looked like a whiligig that to people that aren't color blind would say that there are red dots making up the picture. All that I saw was a picture made up of dots, but no color. I always thought that your eyes weren't supposed to see colors. Now I know that I am color blind.When i was little i had my mom read me a book and she asked me what colors i saw and all i saw were red and blue..... later on that year she took me to an eye doctor and found out that i was color blind in one eye..go on line and search for colour blindness test. If you can see the number in the circle, you are officially not colourblind. If you can't see the image, go to your optometrist and find out for sure to see if your colourblind
What is the probability that a woman whose father was color blind will have a son who is color blind?
50%. 1 of the two male offspring will definately be color blind. Do a punnett square with the father having normal vision and the mother being a carrier.
If your color blind can you be a train driver?
I'm Colourblind, and I can drive a vechile. If you see black and white that does not stop you. Just remeber GO= Bottom Slow=Middle Stop= Top
What does the color black mean on road signs?
you are colourblind.
What must be true about the father?
he is color-blind
Are the color blind genes nore often passed on form the father or the mother?
its from father its from father its from father
Are whales colourblind?
No..Cetaceans see color quite well.
What is the probability of color blindness if the father is color blind and the mother carries the trait?
All daughters are normal, half the sons are color blind. The above answer is incorrect. Half of the daughters are color blind and half of the sons are color blind. Since the father always donates color blindness, it is up to the mother in each case (in the son's case, the father is irrelevant) to determine if the child is color blind or not. Since she is a carrier, the chance is 50-50.
Can a person see colors and what a color blind person can see?
Im not sure exactly what you mean but if you mean can a colourblind person see colours of course we can we just see them differently and sometimes more obscurely. I personally find it annoying when people who know I'm colourblind ask me stuff like that. If you mean do colourblind and non colourblind people see colours differently; yes. Colourblindness is caused by a slight "difference from the normal" of the yellow spot (cluster of photosensitive cells that allow colours to be distinguished)
A male who is colorblind marries a heterozygous womanWhat percent of their total children will be color-blind?
NOW. Colourblindness we will assume, is a Sex-Linked Disorder. Hence, the sex chromosomes are involved in determinig the phenotypes of the children. XY --male XX--female XbY--colourblind male XBXb --normal female Cross: (parents) Xby * XBXb F1 progeny/offspring XBXb, XbXb, XBY, XbY 50 % of the children will be colourblind. This is a very simple question. You also need to clarify within the question if it is sex linked or autosomal.
