Chromatids: Difference between revisions
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Sister chromatids are 2 identical strands | [[Image:Sister chromatids.jpg|right|Sister Chromatid]]Sister chromatids are 2 identical strands containing [[DNA|DNA]] that have a double helix structure. They are held together at the [[Centromere|centromere]] after being copied in the [[S-Phase]] of the [[Cell cycle]]<ref>Alberts et al. (2008) The Molecular Biology Of The Cell, 5th edition, New York:Garland Science.</ref>. During [[Mitosis|mitosis]] chromatids separate, each entering identical [[Daughter cells|daughter cells]]. | ||
< | Image 1: An image of sister chromatids<ref>“Sister Chromatid/ Chromosome Confusion...?” Yahoo! Answers, Yahoo!, 2000, answers.yahoo.com/question/index?qid=20110316132406AABhgVk.</ref>. | ||
=== Dyad === | |||
A dyad<ref name="null">Alberts et al, (2008) Molecular Biology of the Cell. 5th edition. New York, Garland Science</ref> is a sister pair of [[ | A dyad<ref name="null">Alberts et al, (2008) Molecular Biology of the Cell. 5th edition. New York, Garland Science</ref> is a sister pair of [[Chromatid|chromatids]]. These are generated in [[Meiosis prophase 1|prophase 1]] of [[Meiosis prophase 1|meiosis]]. The two sisters line up side by side and share a [[Centromere|centromere]]. | ||
=== References === | === References === | ||
<references /> | <references /> | ||
Latest revision as of 18:18, 22 October 2018
Sister chromatids are 2 identical strands containing DNA that have a double helix structure. They are held together at the centromere after being copied in the S-Phase of the Cell cycle[1]. During mitosis chromatids separate, each entering identical daughter cells.
Image 1: An image of sister chromatids[2].
Dyad
A dyad[3] is a sister pair of chromatids. These are generated in prophase 1 of meiosis. The two sisters line up side by side and share a centromere.
References
- ↑ Alberts et al. (2008) The Molecular Biology Of The Cell, 5th edition, New York:Garland Science.
- ↑ “Sister Chromatid/ Chromosome Confusion...?” Yahoo! Answers, Yahoo!, 2000, answers.yahoo.com/question/index?qid=20110316132406AABhgVk.
- ↑ Alberts et al, (2008) Molecular Biology of the Cell. 5th edition. New York, Garland Science