Question

Этапы деления клетки. Процессы

Answer 1

Митоз: профаза, метофаза, анафаза, телофаза
мейоз: профаза 1,метофаза 1,анафаза 1,телофаза 1,профаза 2,метофаза 2,анафаза 2,телофаза 2 . в начале делений наблюдается интерфаза, и иногда между 1 и 2 делением мейоза, но она по-моему не входит в этапы деления

Answer 2

Cell Division Stages and Processes

Cell division is a fundamental process in both single-celled and multicellular organisms. It involves the replication and division of a cell into two daughter cells. The process of cell division consists of several stages and processes:

1. Interphase: - Interphase is the phase during which the cell grows and carries out its normal functions. It is divided into three stages: G1 phase, S phase, and G2 phase. - During the G1 phase, the cell grows and prepares for DNA replication. - The S phase is where DNA replication occurs, resulting in the formation of sister chromatids. - In the G2 phase, the cell continues to grow and prepares for cell division.

(Source 1)

2. Mitosis: - Mitosis is the process of nuclear division in eukaryotic cells, resulting in the formation of two genetically identical daughter nuclei. - It consists of several stages: prophase, metaphase, anaphase, and telophase. - During prophase, the chromatin condenses into chromosomes, the nuclear envelope breaks down, and the spindle fibers form. - In metaphase, the chromosomes align at the cell's equator. - Anaphase is characterized by the separation of sister chromatids, which are pulled to opposite poles of the cell. - Telophase involves the decondensation of chromosomes, reformation of the nuclear envelope, and cytokinesis, which is the division of the cytoplasm.

(Source 2)

3. Cytokinesis: - Cytokinesis is the process of dividing the cytoplasm to form two separate daughter cells after mitosis. - In animal cells, cytokinesis is achieved through the formation of a cleavage furrow, which pinches the cell into two. - In plant cells, a new cell wall, known as the cell plate, forms between the two daughter cells.

(Source 3)

In summary, the process of cell division involves interphase, mitosis, and cytokinesis, each with specific stages and processes that ensure the accurate replication and division of genetic material and cellular components.

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