GCSE Biology - What are DNA Mutations? (2026/27 exams) скачать в хорошем качестве

GCSE Biology - What are DNA Mutations? (2026/27 exams)

⭐️ Check out our website https://www.cognito.org/ ⭐️ ** WHAT'S COVERED ** 1. Definition and Causes of Mutations 2. How DNA Works and the Effect of Mutations Recap of genes, codons, and amino acid coding. How a base change can alter the amino acid sequence. Potential impact on protein structure and function. 3. Significance of Mutations Why many mutations have no significant effect. Difference between mutations in coding vs. non-coding DNA. Role of non-coding DNA in gene expression. 4. Types of Gene Mutations Substitution, insertion and deletion mutations. ** EXAM BOARD INFO ** AQA - Separate/triple science and higher tier only IGCSE Edexcel - Separate/triple science and higher tier only - Don’t need to know about insertions, deletions etc Edexcel - Separate/triple science and higher tier only - Don’t need to know about insertions, deletions etc OCR 21st Century - Separate/triple science and higher tier only OCR Gateway - Separate/triple science and higher tier only - Don’t need to know about insertions, deletions etc ** CHAPTERS ** 0:00 Introduction to Mutations 0:17 What is a Mutation? 0:44 Causes of Mutations 1:13 How DNA Codes for Proteins 2:05 Effects of Mutations on Proteins 2:57 Why Most Mutations Have No Effect 3:13 Non-Coding DNA and Gene Expression 4:05 Types of Mutations 4:17 Substitution Mutations 4:47 Insertion Mutations 5:36 Deletion Mutations ** PLAYLISTS **    • GCSE Maths (9-1)      • GCSE Biology (9-1)      • GCSE Chemistry (9-1)      • GCSE Physics (9-1)      • A-Level Biology   #GCSE #Biology #study #revision #school #exam #AQA #OCR #Edexcel #IGCSE #IB #AP