Question

Як змінюється спадкова інформація в мітозі?​

Answer 1

Ответ:

мейоз це поділ клітин, при якому діплойдний набір хромосом переходить в гаплойдному. глетка ділитися мейозом двічі. Фази мейозу: профази метафаза анафаза телофаза.

Answer 2

Changes in Hereditary Information during Mitosis

During mitosis, the process by which cells divide to produce two identical daughter cells, the hereditary information contained in the DNA is replicated and distributed equally between the two resulting cells. Mitosis is a crucial process for growth, development, and tissue repair in multicellular organisms.

Mitosis and the Cell Cycle: Mitosis is a part of the larger cell cycle, which consists of several phases: interphase, prophase, metaphase, anaphase, and telophase. During interphase, the cell prepares for division by growing, replicating its DNA, and synthesizing proteins. The subsequent phases of mitosis involve the separation and distribution of the replicated DNA.

Replication of DNA: Before mitosis begins, the DNA in the cell's nucleus undergoes replication. DNA replication is a process in which the double-stranded DNA molecule unwinds and each strand serves as a template for the synthesis of a new complementary strand. This results in two identical copies of the DNA molecule, known as sister chromatids, which are held together at a region called the centromere.

Distribution of Chromosomes: During mitosis, the sister chromatids condense and become visible under a microscope. They align along the center of the cell during metaphase, forming a structure called the metaphase plate. The spindle fibers, which are part of the cell's cytoskeleton, attach to the centromeres of the sister chromatids and help separate them.

Separation of Sister Chromatids: During anaphase, the spindle fibers contract, pulling the sister chromatids apart. Each chromatid is now considered an individual chromosome. The separated chromosomes move towards opposite ends of the cell.

Formation of New Nuclei: In telophase, the separated chromosomes reach the opposite poles of the cell. Nuclear envelopes form around each set of chromosomes, creating two new nuclei. The cell then undergoes cytokinesis, the division of the cytoplasm, resulting in the formation of two daughter cells, each with an identical set of chromosomes.

Changes in Hereditary Information: During mitosis, the hereditary information contained in the DNA remains unchanged. The DNA is replicated before mitosis begins, ensuring that each daughter cell receives an identical copy of the genetic material. This ensures that the hereditary information, including genes and genetic traits, is passed on accurately to the next generation of cells.

In summary, during mitosis, the hereditary information in the form of DNA is replicated and distributed equally between the two resulting daughter cells. This process ensures the accurate transmission of genetic information from one generation of cells to the next.