KS3 Genetics & evolution Test Paper with Mark Scheme

A 40-mark KS3 biology test paper on genetics & evolution for Years 7 to 9: 22 questions to do in 40 minutes, building from quick multiple choice to longer written answers, with the hardest questions in a short stretch section at the end.

What's covered

DNA, genes and chromosomes: where DNA is kept, a magnified chain from a cell to its DNA to label (nucleus, chromosome, gene, base pair), the base-pairing rule and the parts Franklin, Watson and Crick played. Inheritance: chromosomes in gametes and at fertilisation, a table to sort inherited and environmental characteristics, and identical twins. Variation: a table of heights and a histogram to complete, the mode, an eye-colour bar chart to read, and the range. Natural selection: what an adaptation is, the peppered moth on clean and sooty bark to explain, and selective breeding. Extinction: seed banks and the dodo. Stretch: why gene banks keep variation, antibiotic resistance, and a characteristic that skips a generation.

What's included

• A cover page with space for name, class and date, and a list of what the paper covers
• 22 questions worth 40 marks, graded from easier to harder, with diagrams to label and data to read
• Lined space for every written answer
• A complete mark scheme in plain English: what earns each mark, so you can mark it with confidence even if science was a long time ago

Who it's for

Pupils in Years 7 to 9 checking a whole unit before a test, parents helping at home, and tutors and teachers who want a ready-made end-of-unit assessment. The free revision notes and homework sheets for every topic in the unit are at cartana.org/science.

A print-ready A4 PDF, 12 pages. Download it straight after paying.