Which of the following is correct regarding chromosomes?
A) At conception, the fertilized embryo has 48 chromosomes, 24 from the female egg and 24 from the male sperm.
B) The mother of an embryo always contributes a Y chromosome and the father always contributes an X chromosome.
C) Down syndrome results when chromosome 21 is present in triplicate.
D) Chromosomes have no relationship to deoxyribonucleic acid (DNA) .
Correct Answer:
Verified
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Q32: Which of the following is NOT true
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