Скачать или смотреть Life Science | Paper 2 Exam Revision | Meiosis (Grade 12 CAPS)

Master Genetics and Meiosis for Grade 12 CAPS or NSC — Paper 2. Clear notes, worked crosses, crisp meiosis diagrams, plus exam-style data questions and memo keywords 🧬🧪📈

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What you will learn

✂️ Meiosis: purpose, phases Meiosis I and II, synapsis, bivalents, crossing over, chiasmata, independent assortment, non-disjunction; where it occurs and why it increases variation

🧮 Genetics basics: gene, allele, genotype, phenotype, homozygous vs heterozygous, dominant vs recessive, codominance, incomplete dominance

🌱 Monohybrid and dihybrid crosses: parental genotypes, gametes, Punnett squares, F1 ratios, test cross, probability tips

♀️♂️ Sex linkage and pedigrees: X-linked patterns, carriers, affected males, reading family trees

⚠️ Errors and mutations: non-disjunction Down syndrome, gene mutations point and frameshift, effects on proteins

📝 Memo keywords: crossing over, independent assortment, gametes, genotype, phenotype, probability, test cross, sex-linked, pedigree, non-disjunction

Exam technique — Paper 2

Crosses: always show phenotype → genotype → gametes → cross → F1 ratio

Ratios and probability: simplify neatly, use fractions or decimals where asked

Meiosis drawings: label phase, homologous chromosomes vs chromatids, show crossing over clearly

Pedigrees: state pattern, justify with two clues carriers, affected males, skipping generations

Data questions: quote numbers and units, then conclude with a statement that links back to the hypothesis

How to use this video
Watch the lesson ▶️, pause at each question ⏸️, answer first ✍️, then mark with our checklist ✅ to maximise your score.

Hashtags

#Matric #Grade12 #LifeSciences #CAPS #NSC #MatricRevision #Paper2 #Genetics #Meiosis #PunnettSquare #Pedigree #SexLinkage #Mutations #ExamTips #PastPapers #Matric2025 #Matric2026

Tags

Matric Life Sciences, Grade 12 Life Sciences, Life Sciences CAPS, NSC Life Sciences, Paper 2 Genetics, Meiosis Grade 12, Crossing over, Independent assortment, Non-disjunction, Mendelian genetics, Monohybrid cross, Dihybrid cross, Test cross, Codominance, Incomplete dominance, Sex linkage, Pedigree analysis, Probability genetics, Mutations Grade 12, Exam tips Life Sciences, Past papers Life Sciences