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GCSE Combined Science: Inheritance, Alleles and Punnett Squares

Categories: Combined Science, GCSE
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About Course

An exam-focused GCSE Combined Science (biology) course for England on genetic inheritance: DNA, genes and the genome, the key terms examiners expect, Punnett squares and ratios, sex determination, inherited disorders such as polydactyly and cystic fibrosis, family trees and the ethics of embryo screening – with Foundation and Higher tier notes.

Tutwoo Kids is independent and is not affiliated with, or endorsed by, the Department for Education, Ofqual or any exam board. Certificates are for encouragement and are not qualifications.

What Will You Learn?

  • Define gene, allele, genome, genotype, phenotype, dominant, recessive, homozygous and heterozygous
  • Complete and interpret Punnett squares, giving outcomes as ratios, fractions, percentages and probabilities
  • Explain sex determination with XX and XY chromosomes
  • Interpret family trees and evaluate issues around embryo screening

Course Content

Course Lessons

  • DNA, Genes and the Genome
  • The Key Terms
  • Punnett Squares and Sex Determination
  • Inherited Disorders, Family Trees and Ethics

For grown-ups
Sources and further reading for parents, carers and teachers.

Final Assessment

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