6 terms

Biology 7: DNA Replication

STUDY
PLAY
helicase
enzyme that untwists the double helix at the replication forks, separating the two parental strands and making them available as template strands
replication fork
Y-shaped region on a replicating DNA molecule where the parent strands are separated and replication of new strands can occur
DNA Polymerase
adds new DNA nucleotides to a replicating DNA molecule
ligase
glues together fragments of DNA by joining breaks in the sugar-phosphate backbone
RNA primer
Sequence of RNA primers bound to a region of single-stranded DNA to initiate DNA replication.
semiconservative replication
model of DNA replication where the replicated molecules of DNA contain one strand from the original template molecule and one newly synthesized strand