作者
Annaliese S Mason, J Chris Pires
发表日期
2015/1/1
来源
Trends in Genetics
卷号
31
期号
1
页码范围
5-10
出版商
Elsevier
简介
Unreduced gametes (gametes with the somatic chromosome number) are known to facilitate polyploid formation. Unreduced gametes result from a plethora of different mechanisms across different taxa, suggesting that the ability to produce unreduced gametes has evolutionary utility. Heritable genetic variation for unreduced gamete production has been observed, thereby providing an evolutionary substrate. Unreduced gametes are also frequently involved in interspecific hybridisation events as well as being produced by interspecific hybrids, facilitating allopolyploidisation. Environmental stress often triggers unreduced gamete production, suggesting that unreduced gametes may facilitate polyploid speciation in response to changing environments. Thus, although unreduced gamete formation may be a meiotic mishap, we suggest that unreduced gametes can be more explicitly considered as a mechanism for …
学术搜索中的文章
AS Mason, JC Pires - Trends in Genetics, 2015