1. DNA
DNA replication –
DNA function –
Triplets / codons

2. 3.5.6 – The Genetic Code L.O: to recap DNA knowledge from BIOL2
Starter: A B C

3. DNA
DNA replication – helicase breaks H bonds, free nucleotides join and binded together with polymerase.
DNA function – DNA codes for all proteins (all enzymes are proteins!) and protein synthesis happens in ribosomes
Triplets / codons – three bases in a sequence codes for a specific amino acid. The linear sequence of amino acids (primary structure) creates a specific protein.

6. Features of RNA: It has a ribose sugar Uracil replaces thymine
It is single stranded (un-equal ratio of bases)
It is short-lived

7. Key Features of the Genetic Code
v It is universal – same triplets used in ALL organisms to code for SAME amino acids
It is non-overlapping – each triplet is a separate code
It is degenerate – each amino acid is represented by more than one triplet, so more tolerant to mutations

8. Bingo! Choose 9 of the following words to write in your 3x3 grid:
Helicase, polymerase, uracil, guanine, cytosine, adenine, thymine, pentose, nucleotide, universal, non-over lapping, degenerate, base triplet, amino acid, ribosome, nucleus, hydrogen bonds, single polynucleotide chain, double polynucleotide chain