Agmatoploidy and symploidy: a critical review
| Autor: | Marcelo Guerra |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Genetics Chromosome fusion Chromosome number symploidy lcsh:QH426-470 holocentrics Chromosome chromosome evolution Karyotype Chromosomal rearrangement Biology 03 medical and health sciences lcsh:Genetics 030104 developmental biology Special Series of Articles - 60 Years of The Brazilian Society of Genetics agmatoploidy holokinetic chromosomes Ploidy Molecular Biology |
| Zdroj: | Genetics and Molecular Biology, Volume: 39, Issue: 4, Pages: 492-496, Published: 27 OCT 2016 Genetics and Molecular Biology, Iss 0 Genetics and Molecular Biology, Vol 39, Iss 4, Pp 492-496 Genetics and Molecular Biology Genetics and Molecular Biology v.39 n.4 2016 Sociedade Brasileira de Genética (SBG) instacron:SBG |
| Popis: | Agmatoploidy is a type of chromosome rearrangement that involves the fragmentation of an entire chromosome complement, generating a diploid with double its original chromosome number. Agmatoploidy and other related karyotype changes, such as symploidy (the opposite change, promoted by chromosome fusion), partial agmatoploidy, polyagmatoploidy, etc., are restricted to species with holokinetic chromosomes and are assumed to play an important role in their karyotype evolution. However, a critical review of the literature shows that examples of chromosome number doubling by agmatoploidy are rare and not clearly demonstrated, while partial agmatoploidy and partial symploidy seem to be the same as ascending and descending disploidy, respectively. It is therefore proposed here that these terms should be avoided or even abolished. |
| Databáze: | OpenAIRE |
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