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bio 1090

DNA

QuestionAnswer
centromeres point of attachment of chromosomes to mitotic spindle(yeast 110-120bp)
telomeres do prevent degradation by DNases, prevent fusion of ends, facilitate replication
structure of chromosome telomere, centromere. p and q
3rd level scaffolding protiens that help keep its stucture
2nd level 30nm, zigzag and solenoid
1' LEVEL nucleosomes core 8 HISTONE PROTIENS completedby H1 histone (146-166)
First level Nucleosomes, 11nmfibre linker region can be eatten by endonuclease
most common DNA is called B-DNA which has (0.34nm)major and minor groove important for protien bindong
what does T go wth a
what does g go with c
complimentary to 5'gttac3' 3'caatg5'
3' hydroxyl group
5' phosphate group
structural features of DNA Antiparallel, Hydrogen bonding, hydrophobic interactions, double helix right handed
Connected by CG (3) AT(2
RNA Ribonucleic acid
DNA Deoxyribonucleic acid
nucleotid parts are nitrogenous base,Phosphate group and a 2 carbon sugar (DNA has foot without o)
phosphodiester bonds connect pyrimadines and purines to nucleotides.
5 purines , pyrimadines Adenine and guanine, thymine and cytosine
Created by: amistry
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