Inevitability or contingency: how many chromosomes do we really need?  

作　　者：Shuangying Jiang Junbiao Dai 

机构地区：[1]Shenzhen Key Laboratory of Synthetic Genomics and Center for Synthetic Genomics, Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences

出　　处：《Science China(Life Sciences)》2019年第1期140-143,共4页中国科学（生命科学英文版）

摘　　要：In an essay written by the evolutionary biologist Theodosius Dobzhansky in 1973,he pointed out that "Nothing in Biology Makes Sense Except in the Light of Evolution."An interesting phenomenon in biology is the presence of variable numbers of chromosomes in different organisms.Besides several species,which possess multiple circular chromosomes or simply linear chromosomes (Baril et al. 1989;Suwanto and Kaplan,1989;Jumas-Bilak et al.,1998), most prokaryotes only possess one circular chromosome.In contrast,the genomes of eukaryotic species are usually packaged into linear chromosomes with numbers varying from one to hundreds (Crosland and Crozier,1986;Lukhtanov,2015).

关 键 词：INEVITABILITY CONTINGENCY EVOLUTIONARY biologist 

分 类 号：Q[生物学]