Difference between chromosms G1 and G2

The difference between the chromosomes in the G1 and G2 phases is astonishing at first glance, but it is easy to understand. Both phases last a good three hours and are located at different points in the cell division-cell growth cycle. They are correspondingly different in relation to the chromosomes.

The difference between the chromosomes: the G1 phase

• The G1 phase is the postmitotic phase and presynthesis, in which the cells grow again after mitosis and components of the cell complement one another.
• This phase is the normal state of the cells in which all ordinary tasks in the cell are performed.
• Here the chromosomes have a chromatid and are called a chromatid chromosome.

What happens in the G2 phase?

• The G2 phase denotes the premitotic phase, which in turn is postsynthetic. Here mitosis is prepared, the cell is isolated and prepared for cell division.
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Stages of Mitosis - Informative

The stages of mitosis are the individual sections that cells in the so-called ...

• In the preceding S phase, also called interphase, the DNA and thus the chromosomes were doubled, and 23 chromosomes become 46 chromosomes. Now the chromosomes condense and begin to form chromatids. The cell nucleus then briefly consists of 96 chromosomes, all of which are connected on the centrometer and lie next to each other.
• But this will only become noticeable later in the G2 phase. Because here this DNA mass, in which the chromosomes all have two chromatids, is then checked for errors and thus prepared for the final cell division.
• This is followed by the metaphase, in which the chromosomes are visible as the only moment in the process. Then comes the anaphase, which pulls the chromosomes apart, and the telophase, which unwinds the chromosomes again.