Title tRNA 염기 순서를 이용한 계통학적 연구
Author 이병재 * · 이동훈 · 김영준 · 강현삼
Address 서울대학교 자연과학대학 미생물학과
Bibliography Korean Journal of Microbiology, 24(4),400-405, 1986
Key Words tRNA sequences, computer analysis, phylogenetic tree
Abstract We have constructed a phylogenetic tree for eleven species by comparing their tRNA sequences. The tree suggests that prokaryotes diverged very early before the emergence of animals. The fact that H. volcano, an archaebacterium, clusters with eukaryotes implied that eukaryotes did not diverge directly from their common ancestor with eubacteria. The branching order of phage T_4 and phage T_5 indicates that they have diverged separately from their hosts and they might have evolved independently. A correlation between nucleotide substitution in tRNAs and paleontological record was observed. We verified that our phylogenetic tree fits very well with traditional ones very well by imposing the molecular clock on the tree.
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