Genetics

Biology (Science Paper 3) · Chapter 2 · 1. Basic Biology

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Your path through this chapter

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Visual lesson Beta
1. Part 1: Terms, Mendel and the monohybrid cross14 slides
2. Part 2: Dihybrid cross, sex determination and X-linked inheritance14 slides
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Notes Beta
6 sections with key terms, formulas and exam tips.
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Flashcards Beta
30 cards for quick recall of key terms and facts.
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Practice
62 board-style questions with instant checks: Multiple choice 21, Short answer 19, Case-based 6, Assertion and reason 4.
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Chapter test Free
Short and long chapter tests in board pattern, with results and analysis.
- Chapter test (long) — Genetics · 40 marks · 60 min
- Chapter test (short) — Genetics · 20 marks · 30 min
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Terms in genetics: gene, allele, dominant, recessive, homozygous, heterozygous, phenotype, genotype, mutation and variation
Mendel's experiments with garden peas; the laws of dominance, segregation and independent assortment
Monohybrid cross: phenotypic and genotypic ratios
Dihybrid cross: phenotypic ratio only
Sex determination in human beings
X-linked inheritance: haemophilia and colour blindness