GCSE Biology - What are DNA Mutations?

⭐️ 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)  

   • Alevel Biology  

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