Chromatids condense into an X shape before mitosis. Chromatids are identical strands of chromosomes. After duplication there are 12 chromatids that are in 3 pair of homologous chromosomes.
Centromere connects the sister Chromatids
sister chromatids
The cell structure that joins two sister chromatids into one single chromosome is called the centromere. This is at the center of the sister chromatids.
During cell divion (anaphase) .the centromere divides and separates the two sister chromatids.
4 chromatids
tetrad
All tetrads contain four chromatids. Each "leg" is one chromatid.2Tetrad = 2 homologous chromosomes1 homologous chromosome has 2 chromatids joined together by a centromere.That means that there are four chromatids in a tetrad
Parental chromatids are chromatids that have a combination of alleles identical to the parents and Recombinant chromatids are chromatids that have a mix of alleles from both parents.
Chromatids condense into an X shape before mitosis. Chromatids are identical strands of chromosomes. After duplication there are 12 chromatids that are in 3 pair of homologous chromosomes.
4
A bivalent contains two duplicated homologous chromosomes.
Centromere connects the sister Chromatids
Strictly speaking, chromatids aren't attached; they grow that way. They are, however, formed during Prophase of mitosis and Prophase I of meiosis. A: CENTROMERES
In anaphase I the sister chromatids remain attached, while in anaphase II the sister chromatids separate.
Sister Chromatids separate during anaphase.
They pull the sister chromatids apart.