A person who has the disease and always passes it on to their offspring

A person who is unaffected by the disease but can pass on the gene

A person unaffected and incapable of passing on the condition through their genes

A person infected who can spread the disease through a droplet infection

GCSEBiology★★ Medium

GCSE Biology Unit 2 - Genetics Quiz

Understand genetics and inheritance in humans, including how genes are passed on and the role of chromosomes with this GCSE quiz.

Written by Dr. Olivia BennettReviewed by Dr. Chloe EdwardsUpdated 17 Mar 2026

Quizzes and Guides GCSE Biology

Overview

- Improve speed
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- Prepare for assessments

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Quiz details

Topic: Unit 2 Genetics

Questions: 10

Duration: 10 min

Difficulty: ★★ Medium

Focus: applying Unit 2 Genetics ideas with precise biological vocabulary and process logic.

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Common mistakes to catch early

Mixing up process stages
Vague terminology in extended answers
Answering from memory without applying context

Quick answers

What does this quiz measure?

It measures applied accuracy in unit 2 genetics, not just definition recall.

What should I do after a low score?

Fix one error category first, then retake before moving to the next related quiz.

What is the best next step?

Use more Biology quizzes to widen coverage, then switch to GCSE Biology revision topics before full-paper timing.

Description

Understand genetics and inheritance in humans, including how genes are passed on and the role of chromosomes with this GCSE quiz.

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Quiz FAQ

How should I use this GCSE Biology Unit 2 - Genetics Quiz?

Complete the quiz once under normal timing, review every mistake, then return to the Biology subject page to try a related quiz while the topic is still fresh.

What should I do after finishing this GCSE Biology Unit 2 - Genetics Quiz?

Use your score as a signal. If the result is strong, move to another Biology quiz for wider coverage. If the result is weak, repeat practice in the same subject before switching topics.

Is GCSE Biology Unit 2 - Genetics Quiz enough on its own for Biology revision?

One quiz is useful for diagnosis, but not enough on its own. The strongest approach is to combine this page with other quizzes in Biology, plus broader revision or past-paper style practice where available.