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DNA – a set of blueprints
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genetic instructions used in the
development and functioning of all
known living organisms
•
information is wraped on two
antiparallel DNA strands
•
DNA occurs in linear chromosomes
human genome: 2 x 23 (diploid)
•
a certain amount of DNA is devoted to
coding biomolecules
•
variation is an essential factor to
evolution
(1000-10^6 lesions per day)
•
stability is important for the individual
(less than 1/1000 mutations)