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What is the probability that a color-blind woman will have a color- blind son?
Wiki User
∙ 14y ago
The colorblind woman can pass the allele to all her children including sons and daughters but the daugthers will only be carriers for the trait whereas the sons will produce the trait. In order for the daughter to express the trait they would need the allele not only from the mother but from the father also. I just took an exam on this and got it right.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoInheritance Of Color Blindness In Men & Women
Sex-Linked Genes Located On X Chromosome:
+ = Normal Vision (Dominant)
o = Color Blindness (Recessive)
Sex
Color-blind
Normal Vision
Male
XoY
X+Y
Female
XoXo
X+X+ X+Xo
Cross Between A Color-blind Man (XoY) and
Heterozygous Normal Vision Woman (X+Xo)
Gametes
Xo
Yo
X+
X+Xo
X+Y
Xo
XoXo
XoY
In the above cross, four different possible offspring are produced:
- XoY: Color-blind Boy (1/4 or 25%)
- X+Y Normal Vision Boy (1/4 or 25%)
- XoXo Color-blind Girl (1/4 or 25%)
- X+Xo Heterozygous Normal Vision Girl (1/4 or 25%)
Note: The heterozygous normal vision girl carries the recessive gene for
color blindness. On the average, she will pass this gene on to half of her
sons and half of her daughters.
Wiki User
∙ 14y ago100%. If the mother is colorblind, that means that she is homozygous for that trait and the X that she contributes to her son will definitely carry that trait
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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.
Is color blindness a sex linked disease?
Yes. A person is color blind if all his or her X chromosomes have the defective gene. A man have one X chromosome, and a woman has two. Thus: If only the father is color blind - The probability that the son is color blind is 0% - The probability that the daughter is color blind is 0% - The probability that the daughter is a bearer of the defective gene is 100% If the mother is a bearer of the defective gene, but is not color blind, and the father is not color blind - The probability that the son is color blind is 50% - The probability that the daughter is color blind is 0% - The probability that the daughter is a bearer of the defective gene is 50% If the mother is a bearer of the defective gene but not color blind, and the father is color blind - The probability that the son is color blind is 50% - The probability that the daughter is color blind is 50% - The probability that the daughter is a bearer of the defective gene is 100% If the mother is color blind and the father is not - The probability that the son is color blind is 100% - The probability that the daughter is color blind is 0% - The probability that the daughter is a bearer of the defective gene is 100% If both parents are color blind - The probability that the child, regardless of gender, is color blind is 100%
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.
A color-blind woman mates with a male with normal color vision Which of these results would indicate that color blindness is caused by an X-linked recessive allele?
All the sons would be color-blind and none of the daughters are color-blind.
Man who is color blind marries a woman not colorblind and doesn't have recessive allele will their children be carriers of the color blind allele?
50%AnswerColourblindness is a sex-linked recessive mutation i.e. the mutation is carried on the X chromosome. If a colour blind man married a carrier woman they could produce a carrier daughter, a colour blind daughter, a normal son or a colour blind son. The probability of each phenotype occurring is 25%.If XC represents the normal allele for seeing colour and Xc represents the colour blind allele the genotypes of the possible offspring would be as follows:Carrier daughter = XCXcColour blind daughter = XcXcNormal son = XCYColour blind son = XcYThis information is incorrect. In fact a woman can be color blind. My mother is color blind as are my brothers. My sister and I are not though we carry the gene. I have two daughters and one is color blind and the other is not color blind.The information I gave is not incorrect - I have included the possibility of that 'mating' producing a colour blind female child.
If a normal woman whose father is color-blind marries a colorblind man what are their chances of having a colorblind son?
50%
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.
What is the probability that a woman who is a carrier of the colorblind gene and a color blind man will have a first son who will be color blind?
The probability is 0 (but the daughter will be a carrier of the color blind gene). This is because the gene dictating whether someone is color blind or not is linked to the X chromosome (and not the Y). The color blind gene is a recessive gene whilst the normal color vision gene is a dominant gene. Hence if a girl (XX) has one normal vision gene (from one parent) and one color blind gene (from the other parent), her normal vision gene will be dominant to the recessive color blind gene and hence she will have normal vision (but she will be a carrier of the color blind gene). If both her parents contribute the recessive color blind gene to her, then she will be color blind. For a woman (XX) to be color blind, she needs to be have both genes to be recessive (ie where there is no dominant normal color vision gene to dominate). For a man (XY), as long as the X gene contributed by his mother is a color blind gene, he will be color blind because he has no other X chromosome where a dominant normal color gene could reside. Hence, to answer the question, a man with normal color vision (XY, with a dominant normal color vision X gene since the gene can't be the recessive color blind gene otherwise he will be colorblind) and a colorblind woman (XX, both recessive color blind genes), will each contribute an X each the child. The man will contribute his only X chromosome which carries the normal color vision X gene and the woman can only contribute a recessive color blind gene. The man's normal color vision X gene will be dominant, and hence the daughter will definitely have normal vision (despite being a carrier).
What is the probability that a woman who is a carrier of the colorblind gene and a colorblind man will have a daughter who will be colorblind?
the colorblindness is usually not activited in a female body but is usually seen in male
Is color blindness a sex linked disease?
Yes. A person is color blind if all his or her X chromosomes have the defective gene. A man have one X chromosome, and a woman has two. Thus: If only the father is color blind - The probability that the son is color blind is 0% - The probability that the daughter is color blind is 0% - The probability that the daughter is a bearer of the defective gene is 100% If the mother is a bearer of the defective gene, but is not color blind, and the father is not color blind - The probability that the son is color blind is 50% - The probability that the daughter is color blind is 0% - The probability that the daughter is a bearer of the defective gene is 50% If the mother is a bearer of the defective gene but not color blind, and the father is color blind - The probability that the son is color blind is 50% - The probability that the daughter is color blind is 50% - The probability that the daughter is a bearer of the defective gene is 100% If the mother is color blind and the father is not - The probability that the son is color blind is 100% - The probability that the daughter is color blind is 0% - The probability that the daughter is a bearer of the defective gene is 100% If both parents are color blind - The probability that the child, regardless of gender, is color blind is 100%
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.
What is the probability that a colorblind woman and a man with normal vision will have a colorblind daughter?
It all will depend on what kind of (recessive or dominant) alleles are responsible for the colorblind characteristic and what kind of alleles do the parental genes have.
A colorblind man and woman with normal vision whose father was colorblind have a son what is the probability that their son is colorblind?
Make a punnet square with the mother above, her genotype would be: X^B X^b, and the father to the left whose genotype is X^b Y.The probability of having a colorblind CHILD is 50%. The probability of them having a SON is 50%. Since we are asked what the probability of their SON being colorblind, it is 50% as well. The reason is because the chance of having a colorblind son, among sons only, (according to the punnet square) is 50%.
If a color blind woman marries a man with normal vision the children will be?
there is a 50% chance that the child will be colorblind. If it is a boy, it will be colorblind, but if it is a girl, it will only be a carrier. Mother's chromosome is XrXr and Father's Chromosome is XRY, which means the children's genotypes will be XRXr if girl and XrY if a boy.
A womens father is colorblind She marries a colorblind man Will there son or daughter be colorblind?
Colorblindness is an X-linked recessive disorder. This means girls (who have the sex chromosomes XX) must have a colorblind X from dad and a colorblind X from mom. Boys only need to have one colorblind X to be colorblind because they have sex chromosomes XY (and have only 1 X). If the dad has it, he has the colorblind X. If the daughter has it, she must have gotten her mom's colorblind X. If the mom is colorblind, then every child they have will be colorblind. If the mom is not colorblind, then she must be a carrier - she must have 1 normal X and 1 colorblind X. Mom is either colorblind (with 2 colorblind Xs) or she is a carrier. Dad is definitely colorblind.
Can women go colour blind?
AnswerColor blindness is the inability to differentiate between different colors. The most common type is red-green color blindness. This occurs in 8 percent of males and 0.4 percent of females. It occurs when either the red or green cones are not present or not functioning properly. People with this problem are not completely unable to see red or green, but often confuse the two colors. This is an inherited disorder and affects men more commonly since the capacity for color vision is located on the X chromosome. (Women have two X chromosomes, so the probability of inheriting at least one X with normal color vision is high; men have only one X chromosome to work with. The inability to see any color, or seeing only in different shades of gray, is very rare.AnswerWomen can be color blind, but only if their father is. If they got a carrier gene from their color blind father and one from their mother, they would be homozygous recessive, and therefore would be colorblind. Actually I am a woman and my dad is color blind and I am not.The answer says a woman can be color blind only if her father is. In your case, you had a chance of being color blind because your dad is.Another answerNot all women who are color blind has their father color blind. I - being female, I am partially color blind and cannot tell what different color shades are sometimes. Meaning I when dark purple is put in front of me I see light purple. Or if red is in front of me, I see pink. Vice versa, and same with other colors. My father is not color blind. I am not sure that this is color blindness that you have. It seems that you have a color vision defect called Protanomaly, where your color deficiency has to deal with saturation. When someone is color blind it has to deal with hue of the color. This form of color deficiency is also rare.AnswerColor blindness is yummy X-linked trait. That means it is carried in the X chromosome, which differentiates whether a baby will be a girl or a boy. Women have two X chromosomes (XX), and men have an XY combination. If a woman is a carrier for color blindness, only one of her chromosomes will be affected (we'll call it a little "x"), and for that reason she will not be colorblind. Men, on the other hand, only have one X chromosome, so any time they carry the colorblindness gene, they will be colorblind. Since women have two X chromosomes, both must be affected in order for her to be colorblind. A child inherits one chromosome from each parent. He/She will get an X chromosome from his/her mother, and an X from her father (if a girl) or a Y from his father (if a boy). Thus, her father must be colorblind, and her mother must be a carrier (or colorblind), and she must receive a copy of the affected chromosome. For the female offspring to be color blind, the father must be color blind. A father with normal vision would produce heterozygous female offspring and they would be a carrier.AnswerOK girls can not get colorblind only guys have the chromosome gene because the women gives the X and the guy determines if it a boy or girl the colorblind is in the Y chromosome if you get that one your a guy i know this my mom works at a hospital girls can not become colorblind._ok im not the one who posted this but i am here to say that's bull crap my mom is fully color blind and can only see black white and shades of gray like those old movies. its do to a mutation of cells in there eyes that kicks out color conesAnswerI just got done studying genetics and yes it is VERY RARE but women can be colorblind. If a female gets a bad X-chromosome from mom then she is a carrier and can pass it to her son but if she gets a bad one from her mom then her dad would have to have a bad one for her to be colorblind, which is what makes it rare that she would get a bad one from her mother and her dad would be colorblind. She could just get the bad one from dad if he is colorblind but a good one from mom and still be just a carrier.AnswerI am a woman who is red--green colorblind. The trait is carried on the X chromosome. Males receive an X chromosome from their mother and a Y from their father. If the X carries the trait of colorblindness, the male will be colorblind. Females need to receive two defective X chromosomes to be colorblind, one from their father and one from their mother. If a women has only one defective X chromosome, she will be a carrier of the trait. My father was red-green colorblind and so was my mother's father, making my mother a carrier of the trait, although she is not colorblind herself. I have two sisters who are not colorblind, as they each received a non-defective X chromosome from my mother. I knew before my son was born that he would be red-green colorblind, as the X chromosome he received from me carried the trait.
Can women be colored?
AnswerColor blindness is the inability to differentiate between different colors. The most common type is red-green color blindness. This occurs in 8 percent of males and 0.4 percent of females. It occurs when either the red or green cones are not present or not functioning properly. People with this problem are not completely unable to see red or green, but often confuse the two colors. This is an inherited disorder and affects men more commonly since the capacity for color vision is located on the X chromosome. (Women have two X chromosomes, so the probability of inheriting at least one X with normal color vision is high; men have only one X chromosome to work with. The inability to see any color, or seeing only in different shades of gray, is very rare.AnswerWomen can be color blind, but only if their father is. If they got a carrier gene from their color blind father and one from their mother, they would be homozygous recessive, and therefore would be colorblind. Actually I am a woman and my dad is color blind and I am not.The answer says a woman can be color blind only if her father is. In your case, you had a chance of being color blind because your dad is.Another answerNot all women who are color blind has their father color blind. I - being female, I am partially color blind and cannot tell what different color shades are sometimes. Meaning I when dark purple is put in front of me I see light purple. Or if red is in front of me, I see pink. Vice versa, and same with other colors. My father is not color blind. I am not sure that this is color blindness that you have. It seems that you have a color vision defect called Protanomaly, where your color deficiency has to deal with saturation. When someone is color blind it has to deal with hue of the color. This form of color deficiency is also rare.AnswerColor blindness is yummy X-linked trait. That means it is carried in the X chromosome, which differentiates whether a baby will be a girl or a boy. Women have two X chromosomes (XX), and men have an XY combination. If a woman is a carrier for color blindness, only one of her chromosomes will be affected (we'll call it a little "x"), and for that reason she will not be colorblind. Men, on the other hand, only have one X chromosome, so any time they carry the colorblindness gene, they will be colorblind. Since women have two X chromosomes, both must be affected in order for her to be colorblind. A child inherits one chromosome from each parent. He/She will get an X chromosome from his/her mother, and an X from her father (if a girl) or a Y from his father (if a boy). Thus, her father must be colorblind, and her mother must be a carrier (or colorblind), and she must receive a copy of the affected chromosome. For the female offspring to be color blind, the father must be color blind. A father with normal vision would produce heterozygous female offspring and they would be a carrier.AnswerOK girls can not get colorblind only guys have the chromosome gene because the women gives the X and the guy determines if it a boy or girl the colorblind is in the Y chromosome if you get that one your a guy i know this my mom works at a hospital girls can not become colorblind._ok im not the one who posted this but i am here to say that's bull crap my mom is fully color blind and can only see black white and shades of gray like those old movies. its do to a mutation of cells in there eyes that kicks out color conesAnswerI just got done studying genetics and yes it is VERY RARE but women can be colorblind. If a female gets a bad X-chromosome from mom then she is a carrier and can pass it to her son but if she gets a bad one from her mom then her dad would have to have a bad one for her to be colorblind, which is what makes it rare that she would get a bad one from her mother and her dad would be colorblind. She could just get the bad one from dad if he is colorblind but a good one from mom and still be just a carrier.AnswerI am a woman who is red--green colorblind. The trait is carried on the X chromosome. Males receive an X chromosome from their mother and a Y from their father. If the X carries the trait of colorblindness, the male will be colorblind. Females need to receive two defective X chromosomes to be colorblind, one from their father and one from their mother. If a women has only one defective X chromosome, she will be a carrier of the trait. My father was red-green colorblind and so was my mother's father, making my mother a carrier of the trait, although she is not colorblind herself. I have two sisters who are not colorblind, as they each received a non-defective X chromosome from my mother. I knew before my son was born that he would be red-green colorblind, as the X chromosome he received from me carried the trait.
