BIO 1140 Lecture Notes - Lecture 21: Hayflick Limit, Dna Replication, Molecular Cloning
4 Apr 2016
School
Department
Course
Professor
Document Summary
Describe and compare the role of the diferent phases of the cell cycle, including the various molecular checkpoints. Explain how the cell cycle is regulated (internal and external signals) Understand and discuss the relaionship between the cell cycle"s regulaion and the cell"s mechanism for survival versus death. Addiional dna, the sequence ttaggg (humans) repeated thousands of imes. With replicaion, that sequence shortens, but protects the coding regions of our chromosomes. Very long in animal cells, on the 3" segment. It does this because it has no primer, so there"s nothing protecing it. Dna nucleoides are traded, when you remove the last primer you"re let with a 3" overhang, because there"s no free oh group at the end for polymerase to come in and add the nucleoides. If there wasn"t the bufer zone then every ime your chromosome divides your chromosome shortens. If there"s an important gene here then you start chewing into the gene.
