It is difficult to observe individual chromosomes during interphase because (A) the DNA has not ...

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It is difficult to observe individual chromosomes during interphase because
(A) the DNA has not been replicated yet
(B) they have uncoiled to form long, thin strands
(C) homologous chromosomes do not pair up until division starts
(D) the spindle must move them to the metaphase plate before they become visible
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