GCSE Biology - What are DNA Mutations?

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*** 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 ***










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