AUTOSYNAPSIS Meaning and
Definition
-
Autosynapsis refers to the process of synapsis or pairing of chromatids within a single homologous chromosome during meiosis. Synapsis typically occurs during the prophase I of meiosis and involves the pairing of homologous chromosomes. However, in certain cases, autosynapsis may occur where a chromatid pairs with a non-homologous region on the same chromatid, resulting in the formation of a synaptic or tetrad complex.
During autosynapsis, the non-homologous regions of the chromatid align and connect, leading to the formation of a structure called a "pseudo-pairing" or "pseudo-synapse." This process is believed to be a result of genetic or epigenetic factors, which may induce the formation of these atypical synapses. Autosynapsis can lead to altered recombination patterns and can potentially affect the overall chromosomal architecture during meiosis.
The phenomenon of autosynapsis has been studied in various organisms, including plants, animals, and fungi, and its significance in genetic recombination and genome evolution has been explored. It is considered an aberration from the typical process of synapsis and can have implications for proper chromosome segregation, meiotic recombination, and genetic diversity.
Overall, autosynapsis involves the abnormal pairing and connection of non-homologous regions within a single chromatid during meiosis, leading to the formation of atypical synapses.
Etymology of AUTOSYNAPSIS
The word "autosynapsis" is derived from the combination of two terms: "auto" and "synapsis".
1. Auto: The prefix "auto" comes from the Greek word "autos", meaning "self" or "same". It is commonly used in English to indicate self, independently, or automatic. In the context of "autosynapsis", it refers to something happening within itself or self-association.
2. Synapsis: The term "synapsis" originates from the Greek word "synapsis", which means "a joining" or "a connection". In biology, it specifically refers to the pairing of homologous chromosomes during meiosis.
Therefore, when combined, "autosynapsis" refers to a biological process where chromosomes form connections or pair up within the same cell or organism.
