Which of the Following Is Correct Regarding Chromosomes

question 82

Multiple Choice

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).

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