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DNA and inheritance
The instructions inside every cell: what DNA looks like, how genes and chromosomes are passed on, and how to work out the chances with a Punnett square. Three ages, each with a text, an experiment, a game, a quiz, a printable worksheet and a teacher sheet.
Ages 6–7DNA: the instructions inside youEvery living thing carries a set of instructions called DNA. What it looks like, how it is written, and why people are all a little different. With a paper DNA ladder.Ages 10–11Genes, chromosomes and inheritanceWhere DNA is kept, what genes and chromosomes are, how DNA is copied and how features are passed on. With a coin-toss inheritance experiment.Ages 15–16DNA: structure, extraction and Punnett squaresThe double helix and base pairing, the size of the human genome, extracting DNA from strawberries, and predicting genotypes and phenotypes with Punnett squares.