Chapter 7 (50-76)
Card Set Information
Chapter 7 (50-76)
Chapter 7 Voc part 2
The additon of one or more bases to DNA, usually producing a frameshift mutation.
Region of a gene (or mRNA) in eukaryotic cells that does not code for a protein
The new strand of DNA formed in short, discontinuous DNA segments during DNA replication
An enzyme that joins together DNA segments
Repair of DNA dimer by a light-activated enzyme.
The location of a gene on a chromosome
a type of RNA that carries the information from DNA to dictate the arragement of amino acids in a protein
An agent that increases the rate of mutations
A permanent alteration in an organism's DNA
A set of three bases in a gene (or mRNA) that does not code for an amino acid
One of the short, discontinuous DNA segments formed on the lagging strand during DNA replication.
A sequence of closely associated genes that includes both structural genes and regulatory sites that control transcription
The specific observable characteristics displayed by an organism
Mutation in which one base is substituted for another at a specific location in a gene
Polymerace chain reaction
a technique that rapidly produces a billion or more identical copies of a DNA fragment without needing a cell.
A long chain of ribosomes attached a t different points along an mRNA molecule
A normal, nonmutant organism
Light rays, such as x-rays and ultraviolet rays, tht can act as mutagens
Gene that controls the expression of structural genes of an operon through the synthesis of a repessor protein.
The promoter and operator regions of an operon
A site at which the two strands of the DNA double helix separate during replication and new complementary DAN strands form
In an operon it is the protein that binds to the operator, thereby preventing transcription of adjacent genes
An enzyme that cuts DNA at precise base sequences
An enzyme found in retroviruses that copies RNA into DNA
A type of RNA that, together with specific proteins, makes up the ribosomes.
An enzyme that binds to one strand of exposed DNA during transcription and catalyzes the synthesis of RNA from the DNA template