DNA + RNA Flashcards
DNA
`Deoxyribonucleic acid
RNA
Ribonucleic acid
Heredity
Traits are passed from one generation to another
Genetic code
information carried on DNA
Gene
short sequence of DNA that codes for the production of a protein
On DNA there is
coding and non coding regions
DNA is made up of
two strands held together by four bases, then twisted into a double helix shape
4 nitrogenous bases
Adenine (A)
Thymine (T)
Cytosine (C)
Guanine (G)
A is double bonded to
T
C is triple bonded to
G
Nucleotide
when a base is attached to a phosphate on one end and a sugar on the other
Purines
A and G (attorney general is pure)
T and C
Pyrimidines
Codon
codes for a specific amino acid
Replication
occurs at end of interphase
helicase
Unwinds DNA to expose bases
DNA profiling
DNA isolation
Cutting into fragments using restriction enzymes
separation using gel electrophoresis ( separated by size)
Band pattern analysis
Difference between DNA and RNA
Single stranded
strands shorter in length
uracil instead of thymine (mRNA only)
Genetic Screening
Looking for the presence or absence of a gene
Non coding DNA
Does not code for a protein