25%, 50%, 75%, or 100%?
2007-02-25 06:08:14 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Biology
50%
this trait is obviously carried on the x chromosome. the mother carries it on only one chromosome, and the father carries it only on his x chromosome.
25% females are homozygous
25% females heterozygous (carriers)
25% males have the gene
25% males lack the gene
2007-02-25 09:00:21 · answer #1 · answered by bad guppy 5 · 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.
2007-02-25 14:48:31 · answer #2 · answered by secretsauce 7 · 0⤊ 0⤋
Each child would have a 50% chance of having an inheritable trait. But if it's learned behavior trait, you're looking at a considerably higher percentage.
2007-02-25 14:19:40 · answer #3 · answered by Anonymous · 0⤊ 0⤋
50%. The other two children would be carriers of the trait.
2007-02-25 14:12:54 · answer #4 · answered by Sean 3 · 0⤊ 0⤋
Chance for male: 0.5
chance for male expressing the trait: (0.5)(0.5) = 0.25
chance for female: 0.5
chance for female expressing the trait: (0.5)(0.5)= 0.25
chance that the child either male or female would express the trait: (0.25)+(0.25) = 0.5 *100 = 50 %
2007-02-25 14:28:20 · answer #5 · answered by Anonymous Q 2 · 0⤊ 0⤋
75%
2007-02-25 16:43:56 · answer #6 · answered by drjefferson2010 1 · 0⤊ 0⤋
50%
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2007-02-25 14:13:53 · answer #7 · answered by bio rocks! 3 · 0⤊ 0⤋
I WOULD SAY 75% CHANCE
2007-02-25 14:16:23 · answer #8 · answered by Swm 39 4 Younger Swf Forever 4 · 0⤊ 0⤋
Did you have fun making that Avatar?
2007-02-25 14:11:52 · answer #9 · answered by Anonymous · 0⤊ 2⤋