Chapter 6 / 6 short lessons
DNA replication and gene expression
Track sequence, direction and information from DNA copying to a finished polypeptide.
H2 Biology / 9477 / 2027 syllabus
What do you think?
Why does the lagging strand need many primers?
Lessons
0 of 6 marked as readDNA and the three RNA roles
Describe DNA, mRNA, tRNA and rRNA structure and roles.
About 7 minCopy both DNA strands
Explain semi-conservative replication, directionality and leading/lagging synthesis.
About 8 minThe end-replication problem
Explain shortening at linear chromosome ends during replication.
About 6 minTranscribe the template strand
Explain transcription with sequence direction and complementary pairing.
About 6 minProcess a eukaryotic RNA message
Explain capping, polyadenylation and splicing of pre-mRNA.
About 6 minTranslate codons into a polypeptide
Explain ribosomes, tRNA, initiation, elongation and termination.
About 7 minWhat you will be able to do
- Explain nucleic-acid structure and copying.
- Resolve leading/lagging and chromosome-end problems.
- Transcribe, process and translate sequence information.