文章基本信息

标题：Mitochondrial genotype of a unisexual salamander of hybrid origin is unrelated to either of its nuclear haplotypes
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作者：F Kraus ; M M Miyamoto
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1990
卷号：87
期号：6
页码：2235-2238
DOI：10.1073/pnas.87.6.2235
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：We examined mitochondrial DNA (mtDNA), enzyme, and morphological variation among 17 unisexual Ambystoma of hybrid origin. Electrophoretic comparison of diagnostic enzymes indicates that these unisexuals are triploid with two nuclear genomes from the bisexual species Ambystoma laterale and one from Ambystoma jeffersonianum; however, according to restriction analysis, the mtDNAs of these specimens derive from a third species, Ambystoma texanum. This unusual situation is apparently due to a partially independent segregation event in an ancestor of these unisexuals. This situation highlights the potential importance of molecules with different inheritance patterns in elucidating complex cases of reticulate evolution.