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A woman with color-deficient vision marrys a man with normal vision. they have 10 kids .... 6 boys 4 girls...
How many are expected to have normal vision?
how many are expected to have color deficiency?

helpppppp

2006-10-20 10:44:54 · 3 answers · asked by Sad Mom 3 in Science & Mathematics Other - Science

3 answers

assuming it is the variant that is inhereted via x-chromosome / recessive:

Since it is recessive, both x-chromosomes of the mother carry the deficiency, the father is healthy.

Hence ALL the boys will have the deficiency (they receive the x from the mother and have only one x -> they are color-blind).

NONE of the girls are color-blind, since they receive a healthy x from the father, which offsets the deficient x from the mother

2006-10-20 10:54:07 · answer #1 · answered by schoasch 2 · 3 0

Well, we don't know if the deficiency is dominant or recessive. Also, we don't know if the husband is a carrier or not. Also, the color deficiency could be carried on x/y chromosomes. So you really can't know.

2006-10-20 21:57:25 · answer #2 · answered by Hopeful Poster 3 · 0 0

I think it would be better to go one at a time! Smile. However, I would think it could be about half and half. Why 6 boys and 4 girls? .
Hoping the vision to be normal because of the percentage ?.

2006-10-20 18:01:03 · answer #3 · answered by montralia 5 · 0 0

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