This group, surprisingly enough for a biological named structure, is called a tetrad.
nucleus and/or tetrad
Tetrad, Not sure.
tetrad
The centromere is the part of the chromosome where sister chromatids are joined together.
Phase 1- Mitosis begins. Chromosomes condense from long strands into rodlike structures. Phase 2- The nuclear membrane is dissolved. Paired chromatids align at the cell's equator. Phase 3- The paired chromatids separate and move to opposite sides of the cell. Phase 4- A nuclear membrane forms around each set of chromosomes, and the chromosomes decondense. Mitosis is complete.
During anaphase, there is separation of the duplicated centromeres from the paired sister chromatids. As the chromosomes move towards the poles of the cell, they take the shape of letter V.
Chromatids split during Anaphase.
paired
Sister chromatids.
Sister Chromatids
Tetrad (found answer in my 9th grade Biology textbook)
The centromere is the part of the chromosome where sister chromatids are joined together.
Metaphase 1 The chromosomes line up on the equatorial (metaphase) plate. Metaphase 2 Kinetochores of the paired chromatids.
Spindle fibers attach to the centromeres on the sister chromatids.
In anaphase I the duplicate paired chromosomes are separated. In anaphase II, the sister chromatids are separated.
first it becomes two chromatids, then during prophase, chromosomes condense from long strands into rod like structures. During METAPHASE paired chromatids align at the cell's equation. Then during ANAPHASE the paired chromatids separate and move to the opposite side of the cell. During TELOPHASE a nuclear membrane forms around each set of chromosomes, and the chromosomes decondense.
Phase 1- Mitosis begins. Chromosomes condense from long strands into rodlike structures. Phase 2- The nuclear membrane is dissolved. Paired chromatids align at the cell's equator. Phase 3- The paired chromatids separate and move to opposite sides of the cell. Phase 4- A nuclear membrane forms around each set of chromosomes, and the chromosomes decondense. Mitosis is complete.
Except for the sex chromosomes paired chromosomes are homologs.
During anaphase, there is separation of the duplicated centromeres from the paired sister chromatids. As the chromosomes move towards the poles of the cell, they take the shape of letter V.
Chromatids split during Anaphase.