DNA Replication

DNA Replication:  The scheme of the polynucleotide chain (double stranded complement).The replication of the DNA molecule, also known as duplication or polymerization, is a genetic phenomenon that ensures the self-duplication of the information contained in the chromosomes, specifically in the genes.

DNA Replication

This process occurs during the “S” phase of interphase (phase of the cell cycle, which prepares the cell to enter into division), being necessary for the organic maintenance of the individual, allowing the development of the organism (growth), the replacement of injured tissues. (epithelial) or regeneration when possible, as well as the hereditary propagation of the characteristics, providing the formation of gametes containing the reliable information of the species.

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For this process to take place, some events involving the strand of the DNA molecule are essential. Initially, the strand of the template molecule (mother molecule), has its double strand (polynucleotide chain: phosphoric group, pentose deoxyribose and nitrogenous base) separated due to the rupture of hydrogen bonds, maintained between the complementary nitrogenous bases.

DNA Replication

Due to this fact, the replication process is considered semi-conservative, that is, after division is complete, the resulting cells retain half of the original genetic information inherited from the parent cell (mother cell).

Through replication we can understand how we, human beings, were formed from successive divisions of a cell, the result of fertilization (egg cell or zygote), going through intense multiplication until resulting in such a complex organism.

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