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Bio CH 16 - Coggle Diagram
Bio CH 16
DNA replication
Semi-conservative
1 old + 1 new
Origins
Replication bubbles
Forks form
Helicase
Unwinds DNA
SSB Proteins
stabilize strands
Topoisomerase
Relieves twisting
Primase
RNA primer
start point
DNA Pol III
main builder
adds 5' --> 3'
Leading strand
Continuous
DNA Pol I
Removes primer
fills with DNA
Ligase
Glues fragments
Proofreading
Pol III checks
Mismatch repair
Fix after replication
Nucleus repair
Excision repair
fill + seal
DNA Packaging
Histones
Protein cores
Positive charge
Nucleosome
DNA wrapped
Beads on string
30 nm fiber
coiled nucleosomes
Looped domains
attached scaffold
Chromatid
Fully condensed
mitosis form
Heterochromatin
Tight, inactive
Euchromatin
loose, active
DNA structure
Nucleotides
sugar
phosphate
base (A,T,C,G)
Sugar-Phosphate
Backbone
Covalent bonds
Base Pairing
A-T
2 bonds
C-G
3 bonds
Antiparallel
5' --> 3'
Opposite strands
Double helix
Watson/crick model
uniform width
complementary
The molecular basis of inheritance
DNA role
info molecule
stores heredity
double helix
Genes = DNA
code traits
sequence = info
Replication idea
copying DNA
before division
Chromosomes
DNA + proteins
packaged