Unformatted text preview: What is the genetic material?
What is its structure?
is its structure?
How is it copied?
How is it expressed?
(in Eukaryotes) Genetic information flows in one direction... transcription – assembly of RNA (polymer from
nucleotide monomers) along a template DNA strand translation – assembly of polypeptide chain (from
of polypeptide chain (from
amino acid monomers) using 3 types of RNA recall the differences between RNA and DNA structure 1) single strand
vs. double 2) different sugar
in backbone 3) pyrimidine base
Thymine review formation of Hydrogen bonds
between complementary base pairs Cytosine pairs
with Guanine Adenine pairs
(or Uracil) there are 20 amino acids; these are the subunits from
which all protein chains are made
in protein synthesis, each amino acid specified by a
codon (specific sequence of 3 nucleotides on mRNA)
sequence of nucleotides on mRNA)
each amino acid has several codons (redundancy) genetic code is nearly universal among organisms RNA structure differs from DNA... phos...
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