Respuesta :
Mitosis is the cell division event through which a diploid cell, 2n, first duplicates and then divides, producing two diploid daughter cells. At the end of anaphase, there are 14 chromosomes at each pole.
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Let us first reviewe the steps of mitosis
Mitosis is a process by which, from a diploid somatic cell (2n), two daughter diploid cells (2n) are produced.
First occurs duplication of the cell content, and then the separation into two new cells happens.
Mitosis occurs in only one phase.
• In the PROPHASE, it occurs chromosomes condensation and nuclear membrane breaks.
• During the METAPHASE, chromosomes are taken toward the center of the cell by the spindle apparatus. Once in the equatorial plane, chromosomes line up.
Each chromatid joins with a microtubule of opposites poles.
• In ANAPHASE, bonds between chromatids break. They separate and migrate to the opposite poles.
• In TELOPHASE, duplicated chromosomes are already in the corresponding poles, and the nuclear membrane forms again in each pole.
• Finally, cytokinesis occurs.
Now let us analyze the problem.
The somatic cell of the Tazmania devil has 14 chromosomes, 2n = 14.
- During the interphase, the genetic material gets duplicated.
- In prophase, chromosomes condensate. There are 28 chromosomes.
- In metaphase, these 28 chromosomes get aligned in the center of the cell.
- During the anaphase, chromatids sisters separate, and each of them migrates to a pole.
- Finally, in telophase, there are 14 chromosomes in each pole.
At the end of anaphase and before telophase, there are 14 chromosomes in each pole.
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