What it the chance that child will be a carrier?
What is the chance of having an afflicted son?
What is the chance of having an afflicted daughter?
2006-11-09 15:47:07 · 7 answers · asked by totallyclueless 1 in Science & Mathematics ➔ Biology
Mother's genotype is X*X and dad's genotype is XY.
X*X -------> 1/2 X* & 1/2 X
XY --------> 1/2 X & 1/2 Y
Kids genotype will be: 1/4X*X, 1/4XX, 1/4X*Y, 1/4XY
Therefore, there is a 25% chance of having a daughter who is a carrier, 25% chance of having a daughter who is not a carrier, 25% chance of having a hemophilic son and 25% chance of having a healthy son.
2006-11-09 16:18:29 · answer #1 · answered by smarties 6 · 0⤊ 0⤋
Hmm ... you didn't complete the question. "... that a child would ..." what? Have the trait? Or be a carrier? The chances are 50% that the child would have (exhibit) the trait. The chances are 75% that the child would be a carrier. The above is assuming that it is a typical X-linked recessive trait (which is the majority of cases of sex-linked traits). We can assume this because the question says that the woman is a carrier, but does not say she is an exhibitor of the trait. (I.e. if it were a X-linked dominant trait, and being a carrier would make the mother exhibit the trait, then the question would say so.) If it were an X-linked dominant trait, then not only would she exhibit the trait herself, but the odds of the child *exhibiting* the trait would go up ... perhaps as high as 75% ... as the mother would be passing the trait on to all daughters and half her sons. Oh, and we know it's not a Y-linked trait because it says the mother is a carrier.
2016-05-22 02:00:09 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The mother is X*X and the father is XY which means that the four possibilities are X*X X*Y XX XY. That means 25% carrier female, 25% afflicted male, 25% healthy female, and 25% healthy male.
2006-11-09 15:51:18 · answer #3 · answered by kihela 3 · 1⤊ 1⤋
The chance of having afflicted children is none as only
HH and Hh genotypes can be produced. But the chance of
having a carrier child is 50%. The chance of having either a son
or daughter is also 50% unless the man has some special condition.
2006-11-09 15:53:51 · answer #4 · answered by burnt_splint 1 · 0⤊ 5⤋
25% chance of a carrier
25% chance of afflicted son
0% chance of an afflicted daughter
(You use a punnet square.)
Because the trait is sex-linked, if a male has one allele for the trait he will have the trait.
2006-11-09 15:55:02 · answer #5 · answered by moonfreak♦ 5 · 2⤊ 2⤋
I would check that with a doctor. That is VERY serious stuff. The Russian Czars family had that problem and therefor it has been called the royal disease or the disease of kings.
2006-11-09 15:51:03 · answer #6 · answered by Anonymous · 0⤊ 4⤋
50% of your kids will be carriers.
so if you had 2 girls and 2 boys..1 boy might carry it and one girl might carry it.
being a carrier doesn't necessarily mean they will have it. it juss means that they can pass it on to their children.
2006-11-09 15:52:23 · answer #7 · answered by babyboo 1 · 0⤊ 4⤋