Dictionary » S » Sister chromatids

Sister chromatids

Definition

noun, singular: sister chromatid

Two identical strands joined by a common centromere as a result of a chromosome that duplicated during the S phase of the cell cycle.


Supplement

Sister chromatids are separated during mitosis so that the two daughter cells would have identical sets of chromosomes.


Word origin: Greek khrōma, khrōmat-, color.

Compare: non-sister chromatid.
See also: centromere, chromatid.


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Crossing-over

... of genetic information between which of the following: sex chromosomes, sister chromatids, chromatids, homologues. I chose homologues seeing the answers should be non-sister ...

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by myst
Sat Aug 24, 2013 3:12 pm
 
Forum: Genetics
Topic: Crossing-over
Replies: 0
Views: 1166

Re: Genetics Hard problem!

... B+/ba (black), ba/ba (white) If there is one crossover (between the sister chromatids), BA/ba (albino), b+/ba (brown) So in the crossover, since crossover was done in ...

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by Cat
Sun Jul 07, 2013 10:04 pm
 
Forum: PDF & Doc Files
Topic: Genetics Hard problem!
Replies: 2
Views: 3222

independent assortment

... it's in the context of meiosis I. However, if crossing over occurs, sister chromatids are no longer identical so diversity should be increased during meiosis II because ...

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by leeroykincaid
Fri Apr 12, 2013 7:28 am
 
Forum: Cell Biology
Topic: independent assortment
Replies: 2
Views: 3333

Bio Research Paper Writing

... cycles that result in the formation of new telomeres (from sister chromatids) and as a result, a cell is able to continue functioning; however under circumstances ...

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by NathanielZhu
Thu Apr 04, 2013 2:25 am
 
Forum: General Discussion
Topic: Bio Research Paper Writing
Replies: 1
Views: 7989

Genetics with Mitosis and Meiosis

... two strands. When the DNA is coiled, the two strands are referred to as sister chromatids. The sister chromatids are what make chromosomes X-shaped. However, a chromosome ...

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by wildfunguy
Sun Feb 03, 2013 11:45 pm
 
Forum: Genetics
Topic: Genetics with Mitosis and Meiosis
Replies: 2
Views: 6249
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