摘要
Telomeres,the natural termini of chromosomes in eukaryotes,play a very importantrole in stability and complete replication of chromosomes.Previous observations suggestthat chromosomes have non-random distribution in interphase nuclei,and their telomeresusually exist under nuclear envelope.However,no direct evidence available supportssuch an idea.In recent years telomeric DNA sequences of many organizations have beenfound based on the great progress of telomeric study.Therefore we can study