2009
DOI: 10.1590/s1415-47572009005000108
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Abstract: Bombyx mori and Bombyx mandarina are morphologically and physiologically similar. In this study, we compared the nucleotide variations in the complete mitochondrial (mt) genomes between the domesticated silkmoth, B. mori, and its wild ancestors, Chinese B. mandarina (ChBm) and Japanese B. mandarina (JaBm). The sequence divergence and transition mutation ratio between B. mori and ChBm are significantly smaller than those observed between B. mori and JaBm. The preference of transition by DNA strands between B. m… Show more

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Cited by 15 publications
(7 citation statements)
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“…The 37 genes in the mitochondrial genome include 13 protein-coding genes, 22 tRNA-encoding genes, 2 rRNA-encoding genes, and a regulatory region (D-loop). Because the mitochondrial genome has several unique characteristics, including its small size, abundance in animal tissues, strict orthology of encoded genes, and uniparental inheritance, mtDNA is a reliable and easy-to-use phylogenetic marker (Kan et al, 2010;Krajewski et al, 2010;Li et al, 2010;Md-Zain et al, 2010;Morin et al, 2010). Many phylogenetic trees have been constructed for animals.…”
Section: Introductionmentioning
confidence: 99%
“…The 37 genes in the mitochondrial genome include 13 protein-coding genes, 22 tRNA-encoding genes, 2 rRNA-encoding genes, and a regulatory region (D-loop). Because the mitochondrial genome has several unique characteristics, including its small size, abundance in animal tissues, strict orthology of encoded genes, and uniparental inheritance, mtDNA is a reliable and easy-to-use phylogenetic marker (Kan et al, 2010;Krajewski et al, 2010;Li et al, 2010;Md-Zain et al, 2010;Morin et al, 2010). Many phylogenetic trees have been constructed for animals.…”
Section: Introductionmentioning
confidence: 99%
“…The mitochondrial genome contains 37 genes, including 13 protein-coding genes, 22 transfer RNA genes, two rRNA genes, and the control region (D-loop). The excellent characteristics of the mitochondrial genome, such as the small size of the molecule, its abundance in animal tissues, the strict orthology of encoded genes, and its uniparental inheritance make mitochondrial DNA (mtDNA) a reliable and easy-to-use phylogenetic marker (Chan et al, 2010;Kan et al, 2010;Krajewski et al, 2010;Li et al, 2010;MdZain et al, 2010;Morin et al, 2010). In animals, many phylogenetic trees have been re-constructed from the sequence of single genes or elements-for example, Cyb or the D-loop region.…”
Section: Introductionmentioning
confidence: 99%
“…[43,60] . 除 亚洲玉米螟、欧洲玉米螟等 2 个物种("A+T 富集区" 蚕和中国野桑蚕也发现 A+T 富集区核苷酸序列差异 低于蛋白编码基因 cytb, cox3 和 nad4L [10] . 鳞翅目昆 虫 mtDNA 的 A+T 富集 区一般存在 4 个 保守结 构 [15,19,23,61] , 包括: (1) 始于临近核糖体 RNA 基因一 端第 10~30 碱基位点的 ATAGA [20] 或 ATAGT 及其后 15~20 bp 的 polyT, 即复制子 [61] 所在区域.…”
Section: 密码子使用与进化unclassified
“…曾有学者指出, A+T 富集区是 mtDNA 进化最快的区域, 可作为动物群体遗传学的重要分 子标记, 然而从核苷酸替换的角度而言, A+T 富集区 可能并不是昆虫 mtDNA 变化最大的区域[61] . 例如比 较家蚕和日本野桑蚕 mtDNA 可知, 它们 A+T 富集区 的核苷酸序列变异程度仅高于 rrnS 基因[10] ; 比较家…”
unclassified
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