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The gene for color blindness is a recessive allele located on the x chromosome. If a color blind man and color blind woman have one son and three daughters how many will be color blind?
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.
Can only men be colour blind?
More men are color blind than women because the recessive gene for color blindness is carried by women on one of their X chromosomes. And since they have two X chromosomes, the recessive trait is less likely to be expressed. Since men have an X and a Y chromosome, which is shorter, if a mother passes on her X chromosome with the trait of color blindness, her son will have no corresponding gene on his Y chromosome from keeping it from being expressed. So men are color blind more often than women.
In a survey 16 women out of 20 000 were found to be colour blind What is the expected frequency of colour blind males in this population?
Not all forms of color blindness are hereditary. There are three distinct types of hereditary color blindness, each with different frequencies in the human population, and with distinct genetic causes. Red-green color blindness is more common among males than females, but blue-yellow color blindness is not. Talking about color blindness in general, there is no reliable ratio of male-to-female prevalence.
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.
Who carries the color blindness gene?
Color blindness is a defect in the x chromosone. Women always provide an X chromosone in their eggs. Men can either deliver an X or a Y chromosone in their sperm. Both men (XY) and women (XX) carry it. But it is more prevalent in men because they only have one X chromosone, whereas women have two X chromozones and it is very unlikely that both would be defective.
What percent of people are colorblind?
About 8 percent of males, but only 0.5 percent of females, are color blind in some way or another, whether it is one color, a color combination, or another mutation. This is due to males only having one X chromosone - But that's another story.
What percent of men experience some form of color blind?
"Depending on just which figures you believe, color blindness seems to occur in about 8% - 12% of males of European origin..." (Color/ Zelanski & Fisher/ 6th ed.)
The gene for color blindness is a recessive allele located on the x chromosome. If a color blind man and color blind woman have one son and three daughters how many will be color blind?
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.
Can only men be colour blind?
More men are color blind than women because the recessive gene for color blindness is carried by women on one of their X chromosomes. And since they have two X chromosomes, the recessive trait is less likely to be expressed. Since men have an X and a Y chromosome, which is shorter, if a mother passes on her X chromosome with the trait of color blindness, her son will have no corresponding gene on his Y chromosome from keeping it from being expressed. So men are color blind more often than women.
Are tortoise color blind?
Yes. They are color blind. :)
Color-blindness is inherited as an X-linked recessive trait. A male who is color-blind marries a heterozygous woman. What percent of their total children will be color-blind?
In this scenario, the male with color-blindness has the genotype X^cY (where X^c represents the X chromosome with the color-blind trait). The heterozygous woman has the genotype X^cX (one normal vision X and one color-blind X). Their potential offspring can inherit either X^c or X from the mother and either X^c or Y from the father. This results in a 50% chance of having color-blind sons (X^cY) and a 50% chance of having daughters who are carriers (X^cX) but not color-blind. Therefore, 25% of their total children will be color-blind (only the sons can be color-blind in this case).
Who are more color blind men or women?
Men are more likely to be color blind than women. This is primarily due to the fact that color blindness is often linked to the X chromosome, and since men have one X and one Y chromosome, a single recessive gene for color blindness on their X chromosome can result in the condition. Women, having two X chromosomes, are less likely to express color blindness unless both of their X chromosomes carry the gene for it. Consequently, approximately 8% of men and only about 0.5% of women are affected by color blindness.
Are street dogs color blind?
All dogs are color blind
Are you considered red green color blind if you fail only SOME of the color blind tests that you take?
it depends on which color blind test u fail.but id call it part color blind
Are pygmy goats color blind?
No, pygmy goats are not color blind.
How does a color blind test work?
they have two separate colors set in a pattern, if your color blind or partially color blind, you won't see that pattern. If you can, you are not color blind or not blind to the differences betweem those two colors
When was The Two Blind Men created?
The Two Blind Men was created in 1900.
