Class 10 Science Chapter 8 Heredity and Evolution Notes [Handwritten Notes PDF]
Heredity and Evolution is one of the most important chapters in Class 10 Science. It deals with how traits are inherited from one generation to another and how organisms evolve over time. The chapter explains Mendel’s laws of inheritance, variation, sex determination, and evolutionary concepts.
Here, we provide the Handwritten Notes PDF for Chapter 8, which includes diagrams, flowcharts, and simplified explanations for better revision.
For more Class 10 handwritten notes, visit Study Inertia.
Table of Contents
Highlights of the Notes
- NCERT-based handwritten notes with clear diagrams.
- Explanation of Mendel’s experiments and laws.
- Sex determination in humans simplified.
- Evolutionary theories and evidences explained.
- Perfect for quick exam revision.
Topics Covered
- Heredity
- Introduction to heredity
- Variation and its importance
- Mendel’s experiments with pea plants
- Monohybrid and dihybrid cross
- Mendel’s laws of inheritance
- Sex Determination
- Sex chromosomes
- Sex determination in humans (XX–XY mechanism)
- Evolution
- Evolutionary concepts
- Evidence of evolution (fossils, anatomy, embryology, molecular evidence)
- Darwin’s theory of natural selection
- Speciation and origin of new species
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FAQs
1. What is heredity? Heredity is the transmission of genetic traits from parents to offspring.
2. What is variation? Variation refers to the differences in traits among individuals of the same species, essential for evolution.
3. What are Mendel’s laws? Law of Dominance, Law of Segregation, and Law of Independent Assortment.
4. What is natural selection? It is the process by which organisms better adapted to their environment survive and reproduce more successfully.
5. What are the evidences of evolution? Fossils, homologous organs, analogous organs, embryological studies, and molecular evidence.