An estimated 45% of Men are colour blind, compared to 11% for Women.
Colour vision deficiency (CVD) affects about 8% of men and 0.5% of women worldwide.
The colour blind gene is normally carried by females meaning that they are rarely affected by it. Men on the other hand are often effected and are very likely to be partially colour blind if their grandfather on their mothers side was also colour blind. However, some women can be colour blind if one of their parents is colour blind.
Tommy O'Neill St Marks 8B3
the proportion was 6 men to 1 women
I don't know the ratio but I know that men are more likely to become colour blind because women have a backup gene.
AnswerWomen have the sex chromosomes XX, while men have the chromosomes XY. The gene for normal colour vision is found on the X-chromosome. If a woman has one X-chromosome with the gene and one without it, she will not be colour blind. On the other hand, a man with an X-chromosome that is missing the gene has no 'backup'. He will definitely be colour blind. Colour blind women have both X-chromosomes missing the colour vision gene. This is less probable mathematically than having just one X-chromosome missing the gene.
Women can not be colorblind, only men. For questions like these a punnett square is useful. Men can not carry the colorblind trait, but women can. I know this is kind of confusing. When a carrier ( a woman with the color blind trait) has children with a man ( color blind or not) her kids will have 50% chance of having that trait. If its a girl, she will be the carrier. If its a boy, he will have the colorblind trait. SO TO ANSWER YOUR QUESTION: Theoreticaly, 1 of the daughters will be the carrier, and the son will have a 50% chance of being colorblind. Women can be colorblind, its just rare. About every 6400 women one is colour blind and with men, every 80 men 1 is colour blind.
A large proportion of my income goes to pay the mortgage and household bills.There is a higher proportion of men in Government than women.