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Each cell in a sexually reproducing organism has how many copies of each chromosome, and from what sources?

Question
Each cell in a sexually reproducing organism has how many copies of each chromosome, and from what sources?
One copy, from the mother only
One copy, from the father only
Two copies, one from the male parent and one from the female parent
Four copies, two from each parent
Answer
Two copies, one from the male parent and one from the female parent
Detailed Explanation
Each cell has two copies of every chromosome, one inherited from the male parent and one from the female parent.
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