Question

7)When a body cell divides through the process of mitosis, the chromosomes in the daughter cells *

Answer 1

Through the mitotic process, two identical diploid daughter cells are produced. Mitosis is preceeded by the interphase and followed by cytokinesis. 7) b. / 8) a. / 9) b. / 10) b. / 11) c. / 12) a.

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The interphase occurs before cell division. It is composed of the G1, S, and G2 stages.

• During the G1 stage, the cell duplicates in size. The organelles and other cytoplasmatic structures duplicate. The high intense biochemical activity is characteristic of this stage.

• During the S stage occurs the DNI molecule replication process. At this point, also happens the synthesis of histones and other associated proteins.  

• The G2 stage is the final one before the cellular division. Here begins the slow process of DNI condensation. Duplication of centrioles completes. Structures such as spindle fibers are assembled.  

Mitosis is a process by which, from a diploid somatic cell (2n), two daughter diploid cells (2n) are produced.  

Daughter cells are identical to the original cell.

Mitosis occurs in only one phase, divided into four stages.

• 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.

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Now, according to this theoretical framework, we can answer the questions.

7) b. are identical to the chromosomes of the parent cell.

8) a. The information is duplicated.

9) b. Mitosis is a phase in asexual reproduction that results in the formation of identical nuclei in the daughter cells.

10) b. I and III only

11) c. The cell's DNA is replicated.

12) a. Certain genes are turned on and others are turned off; this action produces adult cells that are specialized

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