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Biology SL

Chapter 3: DNA and Protein Synthesis

Follow genetic information from faithful DNA copying through transcription, RNA processing and translation, then investigate mutation, gene editing and epigenetic control.

1 simulation entries

Replication fork laboratory

Advance a replication fork and track how the same 5′→3′ rule produces continuous and discontinuous synthesis.

Appears in: 3.1 Semi-conservative DNA Replication, 3.3 DNA Amplification, Profiling and Sequencing, 3.5 Translation and the Genetic Code, 3.7 Mutation and Protein Consequences, 3.11 From DNA Sequence to Regulated Phenotype

Sequence · structure · expression

Genome and expression laboratory

REPLICATION FORK · PARENTAL TEMPLATES IN BLUE / VIOLETfork movement →new leading strand · continuous · 5′→3′ toward forknew lagging strand · RNA primers + Okazaki fragments · 5′→3′ away from forkHELEach daughter duplex contains one parental strand and one newly synthesized strand.