Chapter 8 / 6 short lessons
Viral and bacterial genetics
Follow genomes through viral cycles, bacterial division and horizontal gene transfer.
H2 Biology / 9477 / 2027 syllabus
What do you think?
Which event changes a bacterium's genotype without being reproduction?
Lessons
0 of 6 marked as readVirus structure and the boundary of life
Interpret viral structures and discuss viruses in relation to cell theory.
About 7 minLytic and lysogenic inheritance
Explain lambda phage lytic and lysogenic cycles.
About 7 minInfluenza: copy RNA and bud
Outline the reproductive cycle of an enveloped influenza virus.
About 6 minHIV: RNA through a DNA stage
Outline retroviral inheritance using HIV.
About 7 minAntigenic drift and shift
Explain sources of viral variation, including influenza antigenic drift and shift.
About 6 minBacterial reproduction and gene transfer
Explain binary fission, transformation, transduction and F-plasmid conjugation.
About 8 minWhat you will be able to do
- Interpret virus structures and host dependence.
- Compare phage, influenza and HIV cycles.
- Explain genetic variation and transfer mechanisms.