Storing Genetic Information
The anchor used to start a new DNA strand is called a ________.
primer
In DNA ________, the newest base is reread before another is added to ensure the DNA strand is being copied accurately.
proofreading
The pairing of ________ is responsible for the diameter of a DNA double helix.
purine to pyrimidine
Prion infections cause ________.
lesions in brains
During the ________ phase, a bacteriophage is incorporated into the host genome.
lysogenic
Meselson and Stahl used "heavy" ________ in their replication studies because ________.
nitrogen; it is present in nucleotides
Viruses utilize ________ as their genetic material.
nucleic acids
Genetic information is stored in the ________ of a DNA molecule.
sequence of nucleotides
Viroids differ from viruses in that they ________.
do not produce proteins
Nucleotide excision repair occurs when ________.
enzymes cut a DNA strand on each side of an incorrect base
During the lysogenic phase, a bacteriophage ________.
incorporates into the host genome
________ are spread by eating infected tissue.
Prions
The ________, one of the most complex virions studied, has a head and tail morphology.
T4 bacteriophage
________ have the largest impact on the agriculture industry.
Viroids
All virions consist of ________.
a capsid
Each strand of a parent DNA molecule serves as the template for a ___________ in a daughter molecule; ________ bond after replication.
a complementary strand ; bond