Which of the following statements is correct concerning chromosomes?
A) They are located in the cytoplasm of the cell.
B) Mature germ cells (ova and spermatozoa) contain 46 chromosomes.
C) Chromosomes can only be seen clearly under a microscope when the nucleus and cell are dividing.
D) Chromosomes contain RNA, which directs the production of amino acids, polypeptides, and proteins by the cell.
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