Mendel Experiments
Telangana Board · Class 12 · Biology
Quick revision notes for Mendel Experiments — Telangana Board Class 12 Biology. Key concepts, formulas, and definitions for last-minute revision.
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Key Topics to Revise
Introduction to Genetics and Heredity
- Genetics: Study of heredity and variation, term coined by Batson in 1906
- Heredity: Transmission of characters from parents to offspring through genes
- Variation: Differences between individuals, arising from mutations and recombination
Mendel's Choice of Garden Pea Plant
- Scientific name: Pisum sativum
- Reasons for selection: Short life cycle, easy to cultivate, bisexual flowers with closed corolla
- Self-pollination possible but cross-pollination can be controlled
Monohybrid Cross and F1, F2 Generations
- Monohybrid cross: Cross between parents differing in one pair of contrasting characters
- P1 Generation: TT (tall) × tt (dwarf)
- F1 Generation: All Tt (heterozygous tall) - 100% tall phenotype
Mendel's Laws of Inheritance
- Law of Segregation (Purity of Gametes): Each individual has two factors for each trait, which separate during gamete formation
- Law of Dominance: One allele masks the expression of another in heterozygous condition
- Law of Independent Assortment: Genes for different traits are inherited independently
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