Study Set Content:
The two strands of DNA coil around a singleaxisforming
right handed double helix.
Each cell contains about (blank) meters of DNA
2
DNA is “packaged” by coiling around a core of proteins known as
histones
The DNA-histone assembly is called a
nucleosome
Histones are rich in
lysine and arginine residues.
DNA - DNA
Replication
DNA - RNA
transcription
RNA-Protein
translation
: process by which DNA is copied with very high fidelity.
Replication
: process by which the DNA genetic code is read and transferred to messenger RNA (mRNA). This is an intermediate step in protein expression
Transcription
The process by which the genetic code is converted to a protein, the end product of gene expression
Translation
The DNA sequence codes for the (blank) sequence, which codes for the
mRNA
The DNA sequence codes for the mRNA sequence, which codes for the
protein sequence
DNA is replicated by the coordinated efforts of a number of proteins and enzymes
REPLICATION
For replication, DNA must be
unknotted, uncoiled and the double helix unwound.
DNA replication is s
semi-conservative:
DNA replication is semi-conservative: Each new strand of DNA contains
one parental strand and one daughter strand
(old, template)
one parental strand
newly synthesized
one daughter strand
Enzymes involved in replication:
Topoisomerase
Helicase
DNA polymerase
DNA ligase
