Origin and Evolution of Life — Class 12 Maharashtra HSC Biology revision notes
A 13-page visual revision sheet for Origin and Evolution of Life, written for Class 12 Maharashtra HSC Biology. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.
What this Origin and Evolution of Life sheet covers
- Four Old Theories of Origin
- Special creation
- Cosmozoic / Panspermia
- Spontaneous generation (Abiogenesis)
- Biogenesis
- Chemical Evolution (Self-Assembly Theory)
- Chemical Evolution, Step by Step
- Coacervates vs Microspheres
- Coacervates (Oparin)
- Microspheres (Sidney Fox)
- First Cell, and the Experimental Proof
- RNA World Hypothesis
- Before Darwin: Lamarck and Weismann
- Darwin's Route to 'Origin of Species' (1859)
- Darwinism, Five Postulates
- 1. Overproduction
- 2. Struggle for existence
- 3. Organic variations
- 4. Natural selection
- 5. Speciation
- Evidence Darwin Cited, and Where He Fell Short
- Mutation Theory (Hugo de Vries, 1901)
- Darwin's Variation vs de Vries's Mutation
- Darwinian variation
- Mutation (de Vries)
- Modern Synthetic Theory
- Sources of Genetic Variation
- Gene mutation
- Genetic recombination
- Gene flow
- Genetic drift
- Chromosomal aberration
- Three Patterns of Natural Selection
- Hardy-Weinberg Equilibrium
- allele frequencies
- genotype frequencies
- AA : Aa : aa
- Isolation, the Third Pillar
- Reproductive Isolation: Pre- vs Post-Mating
- Pre-mating (pre-zygotic)
- Post-mating (post-zygotic)
- Adaptive Radiation
- Homologous vs Analogous Organs
- Homologous
- Analogous
- Vestigial Organs and Molecular Evidence
- Fossils and Connecting Links
- The Planet's Timeline, a Few Landmarks
- Speciation, By Mode
- Geological Time, in Brief
- Human Evolution, the Line of Descent
- Human Evolution, Milestone by Milestone
- Terms Worth Keeping Straight
- Traps that cost marks
- Tricks that save time
How CapCompass uses this sheet
These notes are not a standalone PDF. CapCompass plans Biology chapter by chapter against your real exam dates and free hours, and when the plan reaches Origin and Evolution of Life the sheet opens inside the study block itself — at the page covering the sub-topic that block is on, with the timer still running. Revision arrives at the moment the plan says revise, instead of having to be gone looking for.
More Biology Class 12 revision notes
- Biodiversity, Conservation and Environmental Issues
- Biotechnology
- Control and Co-ordination
- Ecosystems and Energy Flow
- Enhancement of Food Production
- Human Health and Diseases
- Inheritance and Variation
- Molecular Basis of Inheritance
- Organisms and Populations
- Plant Growth and Mineral Nutrition
- Plant Water Relation
- Reproduction in Lower and Higher Animals
- Reproduction in Lower and Higher Plants
- Respiration and Circulation