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Anthropology DNA

Watson and Crick American biologist/British physicist mad model o DNA double helix
DNA long molecule shaped like a double helix mad of units called nucleotide
3 components of nucleotide 5 carbon sugar called deoxyribose, phosphate group, nitrogenous base
DNA backbone chain formed by sugar and phosphate groups of each nucleotide
DNA joined by hydrogen bond
4 Nitrogenous Bases of DNA adenine(A), thymine (T), Cytosine (C), Guanine (G)
purines (2 rings) Adenine and Guanine
Pyrimidines (one ring) thymine and cytosine
chargaff's Rule percentages of guanine and cytosine almost equal in ANY dna sample (aka complementary base pairing)
Prokaryotic DNA single celss that don't have genetic info contained in the nucleus but it is free floating in the cytoplasm
Eukaryotic DNA DNA is in the nucleus in the form of a number of chromosomes
Chromosome structure 1 meeter of DNA in human cell/ Eukaryotic DNA has both DNA and protein/ forms beadlike structure called nucleosome
DNA Replication DNA is unzipped forming 2 strands, each original strand becomes a template
prokaryotic DNA replication starts at 1 point, then goes in 2 directions until chromosome is duplicated at the replication fork (place where separation and replication occur)
Created by: A. Shearer



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