KS3 Biology — Heredity — Full Worksheet

🧬 Build deep understanding of heredity with this complete, no-prep 100-mark worksheet — ready to use for lessons, homework, or revision. Heredity is the process by which features are passed from parents to their offspring through reproduction, and this resource covers it in depth for KS3 students aged 11–14.

📦 What's included:

Structured across three sections of progressive difficulty:

Section 1 (30 marks) — core knowledge on reproduction, offspring, species, the nucleus, inherited features, variation, and siblings through multiple choice, a true/false table, and a 10-gap fill-in-the-blank passage

Section 2 (40 marks) — written definitions, a key term matching activity, short answer questions on why babies inherit from both parents, visible and invisible inherited features, the cockapoo case study, and an explanation of variation between siblings using key vocabulary

Section 3 (30 marks) — three extended writing tasks: evaluating the Lucas and Sofia terrier discussion, comparing identical twins with non-identical siblings, and explaining variation in a litter of kittens from a black cat and a white cat

Full answer key with detailed marking guidance included.

🎬 Watch the free video lesson: https://www.youtube.com/watch?v=l6mXVwliVtk

👩‍🏫 Google Classroom ready — copy the link straight into your assignment. Print as many copies as your class needs.

🔓 Also available as part of the Complete Lesson Pack, bundled with extension activities. Save £1 buying the pack (£3 + £3 = £6 separately, £5 together).

Price: £3