Year 13 biology
Every topic for the year is below, arranged by the term it is taught. Choose a term to show only that term: each topic has a lesson video, worked questions and practice at three levels.
Summer term
- BiologyInheritance and populationsGenotype and phenotype, monohybrid and dihybrid crosses, sex linkage, codominance, multiple alleles, epistasis, the chi-squared test, the Hardy-Weinberg principle and allele frequencies.100 questionsLesson video
- BiologyEvolution, speciation and populations in ecosystemsNatural selection and evolution, genetic drift, speciation, the effect of environmental factors on populations, interspecific and intraspecific competition, succession and conservation, and estimating population size.100 questionsLesson video
- BiologyControl of gene expressionGene and chromosome mutations, stem cells and totipotency, regulation of transcription and translation, epigenetics, and the links between gene expression and cancer.100 questionsLesson video
- BiologyGenome projects and gene technologiesSequencing methods and genome projects, recombinant DNA technology, in vivo and in vitro cloning, DNA probes, genetic engineering and fingerprinting, and the ethics of gene technologies.100 questionsLesson video