Question

A man and woman have a son who is color blind, a recessive sex-linked trait carried on the X-chromosome, but neither parent is color blind. The woman is now pregnant with their second child. Which of the following statements is true about the second child?

Answer 1

A daughter will be color blind because the father is a carrier of the recessive allele.

A son will be color blind because the mother is a carrier of the recessive allele.

A daughter will not be color blind because the father is not a carrier of the recessive allele.

A son will be color blind because the father’s mother must have been a carrier for recessive allele.

Answer 2

B :)

Answer 3

fathers are not carriers and i think it is more common in sons than daughters :)

Answer 4

C. A daughter will not be color blind because the father is not a carrier of the recessive allele.

Answer 5

source: http://answers.yahoo.com/question/index?qid=20111202114240AApFdq8

Answer 6

or that....

Answer 7

@yummydum or wat

Answer 8

or what mathslover said :) ...since he has a source (not the best but still) ...altough what i told you is what i learned :)

Answer 9

so is A

Answer 10

umm....lemme look it up again :)

Answer 11

A and C are both true....you just have to choose the better answer...Bio tests are always like this

Answer 12

I would go with A :)

Answer 13

yup...A :)

Answer 14

hhhhhhhmmm ok

Answer 15

GO for what you studied at present that source is not more reliable ..

best of luck good job @yummydum