a. All of the sperm that males produce contain an X chromosome, so their genetic contribution to the child determines its sex.
b. All of the eggs that females produce contain an X chromosome, so their genetic contibution to the child does not determine its sex.
c. The eggs that females produce containeither an X or a Y chromosome, so their genetic contribution to the child is unrelated to its sex.
2007-05-17
06:36:20
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4 answers
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asked by
dlbaby
1
in
Science & Mathematics
➔ Biology