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Nucleic Acids and Inheritance - Coggle Diagram
Nucleic Acids and Inheritance
DNA(genetic materisl)
Transformation
Program cell
Bacteriophages
T2((DNA or Protein))
The injected DNA of the phade provides the gentic infoemation
Only one of the two cpmponents
Virus is DNA
Additional evidence
Each consisting
A nitrogenous base
A,T,C,G
A sugar
A phosphate group
Chargaff's riles
Scientific Inquiry
X-ray crystallography
Double helix
Antiparallel
A=T and G=C
DNA replication and repair
Base pairing to a template strand
Semiconservative model
DNA Replication
Origins of replication
called Bubbble
Replication fork
Helicases
Single-strand binding proteins
Topoisomerase
Synthesizing a new DNA strand
Primer
Primase
Each nucleotide is a nucleoside triphosphate
dATP has deoxyribose
ATP has ribose
Enzymes (DNA polymerases)
500 nucleotides per second in bacteria
50 per second in human cells
pyrophosphate
Antiparallel elongation
Leading strand
Lagging strand
Okazaki fragments
DNA replication complex
DNA replication machine
DNA replication machine may be stationary
Proofreading and repairing DNA
Mismatch repair
Nucleotide excision repair
A nuclease cuts out
Xeroderma pigmentosum
Evolutionary significance of altered DNA nucleotides
Replicating the ends of DNA molecules
Telomere
Prostpone the erosin of genes near the ends
An enzyme called etelomerase
A chromosome consists of a DNA molecule packed together with proteins
Multilevel system of packing
Chromaitin
Histones
Nucleosome
300-nm
30-nm fiber forms looped domains
Nuclear lamina
Chromatin
Euchromatin
Heterochromatin