Chapter 16The Molecular Basis of Inheritance
About this set
Created by:
bookwormmusicluver on February 13, 2012
Subjects:
Description:
Vocabulary
Log in to favorite or report as inappropriate.
Order by
14 terms
Terms | Definitions |
|---|---|
 Transformation | a change in genotype and phenotype due to the assimilation of external DNA by a cell |
| Bacteriophages or phages | Viruses that infect bacteria widely used as research tools in molecular genetics |
| Double helix | the presence of two strands |
| Semiconservative model | Watson and Crick'd model predicts that when a double helix replcates, each of the two daughter molecules will have one old strand, derived from the parent molecule and one newly made strand |
| Orgins of replication | where the replication of DNA begins |
| Replication fork | A Y- shaped region where the new strands of DNA are elongating |
| DNA polymerases | Elongation of new DNA at a replication frok is catalyzed by enzymes |
| DNA ligase | joins the sugar phosphate backbone s of the Okazaki fragments to create a singe DNA strand |
| Primer | the start of a new chain, is not DNA but a short streach of RNA |
| Primase | an enzyme joins RNA nucleotides to make the primer |
| Helicase | an enzyme that untwists the double helix at the replication fork, separating the two old strands |
| Nuclease | DNA cutting enzyme |
| Telomeres | DNA at the tips of chromosomes |
| Telomerase | An enzyme that catalyzes the lengthening of telomeres. The enzyme includes a molecule of RNA that serves as a template for new telomere segments. |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.