A chromatid (Greek khrōmat- 'color' + -id ) is one half of a duplicated chromosome . Before replication, one chromosome is composed of one DNA molecule. In replication, the DNA molecule is copied, and the two molecules are known as chromatids. During the later stages of cell division these chromatids separate longitudinally to become individual chromosomes.
9-456: [REDACTED] Look up dyad in Wiktionary, the free dictionary. Dyad or dyade may refer to: Arts and entertainment [ edit ] Dyad (music) , a set of two notes or pitches Dyad (novel) , by Michael Brodsky, 1989 Dyad (video game) , 2012 Dyad 1909 and Dyad 1929 , ballets by Wayne McGregor Dyad Institute,
18-662: A fictional biotech corporation in the Canadian TV series Orphan Black Other uses [ edit ] Dyad (biology) , a pair of sister chromatids Dyad (philosophy) , used by the Pythagoreans for the number two, representing "twoness" or "otherness" Dyad (sociology) , a group of two people Grizzled Young Veterans , also known as The Dyad, a British professional wrestling tag team See also [ edit ] Dyadic (disambiguation) Diad , in cell biology Dryad (disambiguation) Dyad pedagogy ,
27-541: A fictional biotech corporation in the Canadian TV series Orphan Black Other uses [ edit ] Dyad (biology) , a pair of sister chromatids Dyad (philosophy) , used by the Pythagoreans for the number two, representing "twoness" or "otherness" Dyad (sociology) , a group of two people Grizzled Young Veterans , also known as The Dyad, a British professional wrestling tag team See also [ edit ] Dyadic (disambiguation) Diad , in cell biology Dryad (disambiguation) Dyad pedagogy ,
36-536: A goal-directed teaching method Dyad symmetry , in genetics Triad (disambiguation) ("group of 3") Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Dyad . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Dyad&oldid=1160326307 " Category : Disambiguation pages Hidden categories: Short description
45-536: A goal-directed teaching method Dyad symmetry , in genetics Triad (disambiguation) ("group of 3") Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Dyad . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Dyad&oldid=1160326307 " Category : Disambiguation pages Hidden categories: Short description
54-512: Is different from Wikidata All article disambiguation pages All disambiguation pages dyad [REDACTED] Look up dyad in Wiktionary, the free dictionary. Dyad or dyade may refer to: Arts and entertainment [ edit ] Dyad (music) , a set of two notes or pitches Dyad (novel) , by Michael Brodsky, 1989 Dyad (video game) , 2012 Dyad 1909 and Dyad 1929 , ballets by Wayne McGregor Dyad Institute,
63-399: Is different from Wikidata All article disambiguation pages All disambiguation pages Dyad (biology) Chromatid pairs are normally genetically identical, and said to be homozygous . However, if mutations occur, they will present slight differences, in which case they are heterozygous . The pairing of chromatids should not be confused with the ploidy of an organism, which
72-460: Is the number of homologous versions of a chromosome. Chromatids may be sister or non-sister chromatids. A sister chromatid is either one of the two chromatids of the same chromosome joined together by a common centromere . A pair of sister chromatids is called a dyad. Once sister chromatids have separated (during the anaphase of mitosis or the anaphase II of meiosis during sexual reproduction ), they are again called chromosomes, each having
81-519: The same genetic mass as one of the individual chromatids that made up its parent. The DNA sequence of two sister chromatids is completely identical (apart from very rare DNA copying errors). Sister chromatid exchange (SCE) is the exchange of genetic information between two sister chromatids . SCEs can occur during mitosis or meiosis . SCEs appear to primarily reflect DNA recombinational repair processes responding to DNA damage (see article Sister chromatid exchange ). Non-sister chromatids , on
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