Question

Which type of cell division helps in regeneration?

Answer 1

The natural process of replacing or restoring damaged or missing cells, tissues, organs, and even entire body parts to full function in both plants and animals is known as Regeneration. For its potential uses in medicine, such as treating a variety of injuries and diseases, scientists are studying the process of regeneration. Through studying regeneration, researchers hope to learn more about the human aging process.

Complete answer:
The process of restoration, renewal and tissue growth which makes cells, genomes, organisms, and ecosystems much more resilient to natural fluctuations or an event that can cause damage is known as regeneration. From microscopic bacteria to humans, every species is capable of regeneration. The process of regeneration can either be complete in which the new tissues formed will be the same as the old lost tissue, or incomplete, in which fibrosis comes after necrotic tissues.
The cell division, Mitosis, helps in the process of regeneration. Mitosis keeps the chromosome number constant in the daughter cells and can produce structurally and functionally similar cells. Mitosis can keep all the somatic cells of an organism genetically similar, such that they will be able to regenerate part or whole of the organism.
Regeneration, at the most elementary level, is mediated by the molecular processes of gene regulation and mainly involves the cellular processes of cell proliferation, morphogenesis and cell differentiation. The process of regeneration is different from reproduction. In the example of hydra, it performs regeneration but reproduces by budding method.

Hence, the correct answer is “Mitosis”.

Note:
Many aspects of regeneration, from the signals which turn on regenerative processes to why stem cells in humans don’t regenerate the way salamanders do, researchers are investigating a lot. Many scientists are much more interested in understanding what promotes the stem cells to form a blastema, which is an accumulation of stem cells at the point of tissue damage.