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Difference Between Sister and Non Sister Chromatids
Mar
16
2011
What are the differences between Sister and Non Sister Chromatids?
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Answer #1
Sister chromatids are ones that are identical and are usually located on the same chromosome, connected by a centromere. It may also be said as “one-half” of the duplicated chromosome. It is one of the two identical copies of DNA making up a chromosome.
It is seen in mitosis, where you see the doubling of the one chromosome, and held together by a centromere (at which point in mitosis that will split apart, and each separate chromatid will go towards the centrioles).
Sister chromatids are identical to each other. During S phase of the cell cycle the DNA is replicated and an identical copy of the chromatid is made. These two chromatids are then called sister chromatids.
On the other hand, non-sister chromatids are ones who are different and are located on different chromosomes. They represent different but homologous chromosomes. They will carry the same type of genetic information, but not exactly the same information.