What is Parthenogenesis?

Parthenogenesis is a form of asexual reproduction where women can produce viable eggs without fertilization men. IT is an Ability Posted by and Wide Variety of Plant and Animal Species, Including Most Non-Vascular Plants Rotifers, Aphids, Some Bees, Some Scorpions, and Parasitic Wasps), And and Few Vertatres (SOME PLASS, FISH AND IN A few cases, birds and sharks). Generally, Parthenogenesis is rare - most animals capable of asexual reproduction are very simple - mushrooms or cnidarians (jellyfish, corals, etc.), too simple to have sex.

The process of parthenogenesis should not be confused with the quality of hermaphroditism - a species with reproductive parts of men and women. For most hermaphroditic species, reproduction is still sexual and requires two participants. Parthenogenesis is a passage way that complex animals canClone. In some cases, this may result in descendants that are genetically different from parents, depending on whether the egg is haploid or diploid. Like any other forms of reproduction, the parthenogenesis has its advantages (reproduction without the need for a man) and weakness (low genetic diversity, susceptibility to harmful mutations that persist for generations).

Many species that can undergo parthenogenesis is also able to use sexual means for reproduction. This shuffles around genes through recombrors and increases genetic diversity to the necessary threshold. For some reptiles, especially in New Mexico, reproduction is exclusively through Parthenogenesis. These species tend to be polyploid, as well as V, have more than two sets of chromosomes, which means that their genomes are combinations of two or more parental lizards in the same genus. SwordHanism, which the mixing of chromosomes between species leads to parthenogenesis, is not known, but this is observed. Polyploidy occurs in some hybrids between two or more species.

Although there are no known natural cases of mammal parthenogenesis, Gregory Pincus, 1936 (Tokyo University of Agriculture, 2004) and monkeys were induced artificially. Induced parthenogenesis in mice and monkeys often leads to abnormal development, because the mother's chromosomes are printed twice in the child genome and many genomes of mammals are completely dependent on the combination of both sex genes for smooth development. As a result, for ethical reasons it is unlikely that human living births from Parthenogenesis would be carried out, although this process can be used to create embryos for experimentation. South Korean scientist Hwang Woo-Suk achieved this in 2007 while trying to be the first to clone man. There was no cloning SUV, but produced viable human embryos made by artificial parthenogenesis.