Look carefully at the image of the human karyotype shown in Figure 11.3. What is the significance of the small differences between homologous chromosomes? 
Photo credit: ISM/Phototake.
A) Each homologous chromosome in a pair is from a different parent.
B) Some of this person's DNA is mutated, possibly causing disease.
C) Chromosomes may not be completely replicated during S phase.
D) The differences are a result of the way the material was prepared.
Correct Answer:
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