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    did you know.... 👀👂 that there are errors in mitosis ? Although errors in mitosis are very rare, this process can fail, especially during the first cell divisions in the zygote. Mitotic errors can be especially dangerous to the body, because the future offspring of the defective stem cell will maintain the same abnormality. A chromosome may not separate during the anaphase. This phenomenon is called "nondisjunction". If this happens, one daughter cell will receive two sister chromosomes and the other will be left without either. This results in one cell having three chromosomes encoding the same genetic information (two siblings and a homologous), a condition known as trisomy, and the other cell, which has only one chromosome (the homologous chromosome), will have monosomy. These cells are considered aneuploid, and aneuploidy can cause genetic instability, a common occurrence in cancer. 

Meiosis and Metosis

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  Meiosis👂 what is meiosis ? Meiosis is the formation of eggs and sperm. In organisms with sexual reproduction, the cells of the body are diploid, that is, they contain two sets of chromosomes (one from each parent). During meiosis, the members of each homologous pair of chromosomes pair up during prophase, forming bivalents. During this phase, a protein structure called the synaptonemic complex is formed, allowing recombination to take place between the two homologous chromosomes. Cell process The preparatory steps leading to meiosis are identical in pattern and name to the interface of the mitotic cycle of the cell. The interface is divided into three phases: G1 phase: characterized by the increase in cell size due to the accelerated manufacture of organelles, proteins and other cellular matter. S phase: the genetic material is replicated, that is, the DNA replicates giving rise to two new chains, joined by the centromere. Chromosomes, which until now had only one chromatid, now...

Cellular Reproduccion

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CELLULAR REPRODUCCION  👪 What is cell reproduction ? This action makes it possible to generate a copy, to produce a thing again or, in relation to living beings, to give birth to a new organism with identical biological characteristics. The notion of cell reproduction refers to the procedure that allows the generation of new cells from a stem cell. It is a process of cell division, which enables the growth of organisms.  In the case of eukaryotic cells, cell reproduction usually takes place through mitosis. This process implies that, when a cell reaches a certain stage of development, it divides into two daughter cells that are the same and that replicate all the DNA of the mother cell. meiosis. In this case, a diploid cell develops two divisions in succession and thus generates four haploid cells. Prokaryotic cell reproduction, on the other hand, can develop in different ways, which are discussed below. It is also known as sporogenesis or sputum, and it is a process of cell ...

Sexual and Asexual Reproduction

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  REPRODUCCION ASEXUAL🌳🐟🍅   What is asexual reproduction ? Asexual reproduction is a mode of reproduction that occurs without the fusion  of gametes and doesn’t involve the exchange of genetic information, resulting in offsprings identical to their parents. Asexual reproduction in animals: Asexual reproduction only occurs in organisms whose cells still retain embryonic totipotency, that is, 'the ability not only to multiply', but also to differentiate into different types of cells to achieve the reconstruction of the parts of the body that may be missing . Asexual reproduction in plants: 🙋 It occurs in plants when a part of them divides and develops separately until it becomes a new plant. Advantages and disadvantages of asexual reproduction 👀 Advantage Among the biological advantages that it entails are its rapidity of division and its simplicity, since they do not have to produce sex cells, nor do they have to expend energy in the operations prior to fertilization,...