Pre-U Biology - DNA Replication
Terms in this set (21)
an enzyme that untwists the double helix at the replication forks, separating the two parental strands and making them available as template strands
A Y-shaped region on a replicating DNA molecule where new strands are growing.
DNA Polymerase III
Adds new DNA nucleotides to a replicating DNA molecule
Glues together fragments of DNA
short segments of DNA synthesized in the lagging strand during DNA replication
An enzyme that joins RNA nucleotides to make the primer.
Sequence of RNA primers bound to a region of single-stranded DNA to initiate DNA replication.
the new continuous complementary DNA strand synthesized along the template strand in the mandatory 5' --> 3' direction
A discontinuously synthesized DNA strand that elongates in a direction away from the replication fork.
single-ring nitrogenous base, found in DNA and RNA; either cytosine, thymine, or uracil
double-ring nitrogenous base, found in DNA and RNA; either adenine or guanine
deoxyribonucleic acid, the material that contains the information that determines inherited characteristics
Replicated molecule of DNA containing one strand from the original template molecule and one newly synthesized strand.
a purine (nitrogenous base) component of nucleotides and nucleic acids; links with cytosine in DNA
purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
a pyrimidine component of nucleic acids and nucleotides; pairs with adenine in DNA
a base found in DNA and RNA and derived from pyrimidine; pairs with guanine
protein that organizes chromosomes and around which DNA wraps
one half of a duplicated chromosome
DNA Polymerase I
removes the RNA primer and replaces it with DNA
an unwound and open region of a DNA helix where DNA replication occurs
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