Chromatids

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Sister chromatids are 2 identical strands of [[DNA|DNA]], held together at the [[Centromere|centromere]]&nbsp;after being copied in the&nbsp;[[S-Phase]]&nbsp;of the [[Cell cycle]]&nbsp;<ref>Alberts et al. (2008) The Molecular Biology Of The Cell, 5th edition, New York:Garland Science.</ref>. During&nbsp;[[Mitosis|mitosis]]&nbsp;chromatids separate, each entering identical [[Daughter cells|daughter cells]].<br>  
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[[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]].  
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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  ===
 
=== Dyad  ===
  
A dyad&nbsp;<ref name="null">Alberts et al, (2008) Molecular Biology of the Cell. 5th edition. New York, Garland Science</ref> is a sister pair of [[Chromatids|chr]][[Image:]][[Chromatids|omatids]]<span style="line-height: 1.5em;">. These are generated in prophase 1 of </span>[[Meiosis prophase 1|meiosis]]<span style="line-height: 1.5em;">. The two sisters line up side by side and share a </span>[[Centromere|centromere]]<span style="line-height: 1.5em;">.</span>
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A dyad<ref name="null">Alberts et al, (2008) Molecular Biology of the Cell. 5th edition. New York, Garland Science</ref>&nbsp;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 Chromatid
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

  1. Alberts et al. (2008) The Molecular Biology Of The Cell, 5th edition, New York:Garland Science.
  2. “Sister Chromatid/ Chromosome Confusion...?” Yahoo! Answers, Yahoo!, 2000, answers.yahoo.com/question/index?qid=20110316132406AABhgVk.
  3. Alberts et al, (2008) Molecular Biology of the Cell. 5th edition. New York, Garland Science
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