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Biomolecule of heredity
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proteom - whole protein in all living things
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Nitrogenous Base
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Sugar Moiety
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Pyrimidine
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2-Deoxyribose
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Cytosine
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Ribose
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Uracil
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Thymine
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Purine
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Adenine
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Guanine
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B-DNA
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A-DNA
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Z-DNA
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10 bp
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11 bp
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12 bp
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Right handed
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Right handed
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Left handed
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major & minor groove
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alternating G-C sequence in alcohol or high salt solution
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Anti parallel
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DNA is long polymer of nucleotides
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Phosphodiester linkage between 3' and 5'
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Hbond of nitrogenous base
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Anti-Parallel
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Nucleosome
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-Fundamental Unit
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-(+) Histone and (-) DNA
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Histone
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-present in quantities that their total mass in chromatin
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-high proportion of positively charged AA
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Arrangement
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Nucleosome
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-basic structural unit of chromatin
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Chromatin Fiber
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-coiled and condensed to form chromosomes
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Loops
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-chromatin fiber folded into loops
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Chromosome
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-H2A, H2B, H3,H4
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A= T
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Apple in Tree
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C = G
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Car in Garage
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DNA
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RNA
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Adenine , Thymine
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Adenine , Uracil
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Cytosine , Guanine
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Guanine , Cytosine
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mRNA
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-messenger RNA
-premature, code for proteins -blueprint |
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rRNA
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-ribosomal RNA
-most abundant , basic structure of ribosome |
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tRNA
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-transfer RNAs
-adaptor between mRNA and AA |
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snRNA
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-small nuclear RNA
-spilicing of pre-mRNA |
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snoRNA
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-small nucleolar RNA
-modify rRNA |
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other noncoding RNA
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-e.g. telemore synthesis
-X chromosome inactivation -transport of proteins into ER |
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