Talk:Chromatid

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Centromeres are not necessarily the central points of chromosomes. If a chromosome is telocentric or acrocentri, the centromeres will not be in the center.

Chromatid

this page is about chromatids and not about telomeres, so I suggest deleting some of the sentences in the first paragraph and leave only the description of chromatid.

Question: It is a tongue twister but I am very serious: If a Dyad is a pair of sister chromatids but a chromatid is only such if it’s joined to another by a centromere, then at anaphase there would be 4 sister chromosomes per pole, right? —Preceding unsigned comment added by 192.211.25.48 (talk) 10:42, 29 August 2010 (UTC)

Okay, so a pair of sister chromatids is called a dyad, a term which is synonymous to chromosome, which itself consists of two sister chromatids connected by a centromere, yes? —Preceding unsigned comment added by 192.211.25.48 (talk) 10:53, 29 August 2010 (UTC)

Question: Is the use of chromatid only for the use of describing one of the identical pair of chromosome during M phase or meiosis. Or can you call one of the two homologous chromosomes a chromatid too?

more general

This term is used elsewhere than just in reference to chromosomes. It should be a more general article, with a subsection on chromosomes (or a link to a chromosome page, as suggested before). —Preceding unsigned comment added by 130.126.15.135 (talk) 15:23, 7 April 2010 (UTC)

Could somebody who knows this subject improve this article....

...by starting it off with a definition and/or explanation of what a chromatid is, rather than what it does? I came here from another Wikipedia article about chromosome transposons, hoping to find out what a "chromatid" is, but I'm still uncertain. Of course, I'm not very smart, so it might just be me.Theodore Rigley 16:39, 5 January 2013 (UTC) — Preceding unsigned comment added by Trigley (talk • contribs)

Here is the first sentence of the article:

"A chromatid holds the replicated DNA of each individual chromosome, which are joined by a centromere, for the process of cell division (mitosis or meiosis)."

This sentence seems terribly ambiguous and unclear in its meaning, which may not be apparent to someone who knows the subject. There seems not to be subject/verb agreement. What are the "which" that are joined by a centromere? Chromatids? Replicated DNA? Individual chromosomes? Is it chromatids or individual chromosomes "...which are joined by a centromere, for the process of cell division (mitosis or meiosis)."? And which is it that is "...for the process of cell division...", chromatids holding the replicated DNA of each individual chromosome, or being joined by a centromere? Theodore Rigley 16:59, 5 January 2013 (UTC) — Preceding unsigned comment added by Trigley (talk • contribs)

And another thing; what does "...holds the replicated DNA.." mean? Hasn't all DNA been replicated? Does this mean recently replicated? And what does "hold" mean? Hold like a cup, like a framework? Is a chromatid a mechanical containing device? What is it made out of? What happens to it before and after DNA replication? Why is it needed? And, is the phrase "which are joined by a centromere" completely irrelevant? Is there a smaller, better sentence trapped inside of this one? Maybe it should read "A chromatid holds the DNA of a chromosome for the process of cell division." Is that essentially what this sentence is trying to say? If so, is it accurate, and meaningful? Help!Theodore Rigley 17:12, 5 January 2013 (UTC) — Preceding unsigned comment added by Trigley (talk • contribs)

Assessment comment

The comment(s) below were originally left at Talk:Chromatid/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.

Having this article separate is a good thing, just leave a link in the chromosome page to it. Even though it is not a huge part, it is excellent when having to research chromatids not chromosomes. I say leave it be. Changed rating to "high" as this is high school/SAT biology content, important part of chromosome and meiosis. - tameeria 21:40, 18 February 2007 (UTC)

Last edited at 21:40, 18 February 2007 (UTC). Substituted at 11:43, 29 April 2016 (UTC)

comment from a PhD, molecular biology

the problem is that chromatid is the same as daughter dsDNA molecule, but a ds in a particular state this is not made crystal clear, and therefore leads to confusion In most cells, DNA is in a double strand (ds) form; we call each piece of DNA in a cell a chromosome. When the cell divides, the DNA is replicated into two identical ds DNA chromosomes. However, during replication, we call the two chromosomes chromatids

no ??? during replication — Preceding unsigned comment added by 2601:192:4701:BE80:E9A1:660F:D55A:1C65 (talk) 01:19, 13 June 2018 (UTC)

Wrong phrasing

"A chromatid (Greek khrōmat- 'color' + -id) is one copy of a newly copied chromosome which is still joined to the original chromosome by a single centromere."

This is a wrong saying. Chromosomes are essentially DNA molecules with attached histone. After duplicating, each of the two DNA molecules have half of the original one. Neither is "original" nor "newly copied". — Preceding unsigned comment added by Togira Ikonoka 123 (talk • contribs) 02:03, 16 January 2019 (UTC)