三个鲤品种线粒体基因片段序列保守性
SEQUENCE CONSERVATION ON SEGMENTS OF MITOCHONDRIAL 16S rRNA AND CYTOCHROME B IN STRAINS OF COMMON CARP(CYPRINUS CARPIO L. VAR.)
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摘要: 在红鲤、镜鲤和野鲤中进行线粒体16SrRNA和Cytb基因片段的序列测定.结果发现,3个鲤品种在多达859个碱基长度上无变异,但是与已报道的鲤全序列中的同源序列则有约15%的趋异.这个结果提示3个鲤品种可能在起源中是独立的一支,并且分化极低.Abstract: Mitochondrial DNA sequence analysis was carried out in 3 strains of Chinese carp(Cyprinus carpio L. var.), i.e.red carp, mirror carp and wild carp and compared with reference carp strain of unknown origin. There were no base substitutions among 3 strains at up to 859 base pairs, however, comparison between these sequences and homologous sequence of the reference strain showed about 0.19% and 1.46% divergence at 16S rRNA and Cytochrome b sequence, respectively. These results indicate that the genetic divergence among red carp, mirror carp and wild carp is exceptionally low, and they are probably an independent branch in the evolution of carp.
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Keywords:
- Carp(Cyprinus carpio) /
- Strain /
- mtDNA sequence /
- 16S rRNA /
- Cyt b /
- Conservation
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