chapter 12.4: mutations - featured products · chapter 12.4: mutations mutations: changes in the...

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Chapter 12.4: Mutations Mutations: changes in the genetic material . gene mutations chromosomal mutations Sometimes cells make mistakes when copying their own DNA

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Page 1: Chapter 12.4: Mutations - Featured Products · Chapter 12.4: Mutations Mutations: changes in the genetic material. gene mutations ... Chromosome Original (template) DNA Replication

Chapter 12.4: Mutations

Mutations: changes in the genetic material

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● gene mutations ● chromosomal mutations

Sometimes cells make mistakes when copying their own DNA

Page 2: Chapter 12.4: Mutations - Featured Products · Chapter 12.4: Mutations Mutations: changes in the genetic material. gene mutations ... Chromosome Original (template) DNA Replication

Point mutations: Gene mutations with changes in only a few nucleotides bases

● Substitutions: when one base is changed to another

● Insertions: when a base is inserted

● Deletions: when a base is removed

Page 3: Chapter 12.4: Mutations - Featured Products · Chapter 12.4: Mutations Mutations: changes in the genetic material. gene mutations ... Chromosome Original (template) DNA Replication

Chromosomal mutations involve changes in the number or structure of chromosomes.

Mutations