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Dictionary » S » Sister chromatid

Sister chromatid

Definition

noun, plural: sister chromatids

Any of the two chromatids joined together by a common centromere.


Supplement

A sister chromatid 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.

Word origin: Greek khrōma, khrōmat-, color.

Related terms: sister chromatid exchange.

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


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Questions about Biology's term

... the chromosomal material as a whole inclusive of other proteins. Chromatid: Is a copy of a chromosome present after DNA and chromosome replication. ... new chromosomes. Bivalent: A chromosome that has duplicated to form two sister chromatids still held together at the centromere. Tetrads: Group ...

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by Jesse2504
Tue Jun 23, 2009 6:25 am
 
Forum: General Discussion
Topic: Questions about Biology's term
Replies: 6
Views: 222

Questions about Biology's term

What is the difference between chromatid, chromatin and chromosome? It also state that bivalent is visible under microscope ... 1 maternal). A tetrad consists of 2 homologous chromosomes, each made up of 2 sister chromatid. Is that means tetrad consists of 4 chromatid and each of the homologous ...

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by dorevidadamn
Sun Jun 21, 2009 2:53 am
 
Forum: General Discussion
Topic: Questions about Biology's term
Replies: 6
Views: 222

Re: Difference between chromatid and chromatin?

... other. It this state, instead of calling them chromosomes, we call them chromatids. Thus, two sister chromatids are linked together at their specific DNA sequences called centromeres. Interesting, ...

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by kk
Sat Jan 17, 2009 1:55 pm
 
Forum: Cell Biology
Topic: Difference between chromatid and chromatin?
Replies: 3
Views: 3181

diploid cell organization

... by DNA sequence. When the homologous chromosomes pair together, one sister chromatid of each pairs with one sister chromatid of the other. This can be either way, because ...

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by MrMistery
Fri Sep 26, 2008 1:24 pm
 
Forum: Cell Biology
Topic: diploid cell organization
Replies: 4
Views: 1839

HELP! Questions on mitosis and meiosis

... answer the following questions: 1. In meiosis, what happens to the chromatid in each daughter cell at the end of Telophase 2? Do they replicate their sister chromatid? So that resulting egg + sperm cells actually have chromatids [chromosomes?] ...

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by robotnick
Tue Jun 10, 2008 12:11 pm
 
Forum: Genetics
Topic: HELP! Questions on mitosis and meiosis
Replies: 9
Views: 3988
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