Homologous chromosomes differ from sister chromatids because
A: sister chromatids cannot be separated from one another, while homologous chromosomes can.
B: homologous chromosomes are formed after replication, while sister chromatids exist prior to S phase of interphase.
C: homologous chromosomes are identical copies, while sister chromatids are only similar in gene location.
D: sister chromatids are identical copies, while homologous chromosomes may differ in the allele present.
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Homologous chromosomes differ from sister chromatids because
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