Heredity
CBSE · Class 10 · Science
Complete topic list for Heredity in CBSE Class 10 Science. Key concepts, sub-topics, and what to focus on for board exams.
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Get startedTopics in Heredity
Accumulation of Variation During Reproduction
- Reproduction creates individuals that are similar but subtly different from their parents
- Each generation inherits differences from previous generation plus newly created differences
- Asexual reproduction creates minor variations due to small DNA copying errors
Inherited Traits and Mendel's Laws
- Gregor Mendel studied inheritance patterns in pea plants (1822-1884)
- Both parents contribute equally to offspring's genetic material
- Each trait has two versions (alleles) in each individual
Mechanism of Trait Expression
- Genes are sections of DNA that code for specific proteins
- Proteins (especially enzymes) control the expression of traits
- Example: Plant height depends on hormone production controlled by enzymes
Sex Determination
- Sex determination varies across species - environmental or genetic
- Some reptiles: temperature determines sex during egg development
- Some animals like snails can change sex
Key Concepts
Central concept: Heredity
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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