2.2.2 Mutations Practice

What is a codon?

• It is a three letter section of bases on mRNA that codes for a specific amino acid

• It is a three letter section of bases on DNA that codes for a specific amino acid

• It is a type of mutation that occurs when there has been a substitution, deletion or insertion.
• It is a three letter section of bases on tRNA that allows for the placement of a specific amino acid

Are all mutations bad?

• Yes
• No

A type of mutation in which there is no change to the amino acid sequence of the protein.

• Missense
• Nonsense
• Silent
• Deletion

ATTTGAGCC - Original
ATTGAGCC   - Mutated
The example above is an example of a 

• Insertion- Frameshift
• Deletion- Substitution
• Deletion -Frameshift
• Insertion-Substitution

How are mutations passed on to offspring?

• Any mutation that an organism acquires in its life can be passed on to the offspring

• Only mutations that occur in the organism's sex cells (gametes) can be passed on to the offspring

• Mutations are not usually passed on to offspring. A mutation stays within the original organism.

• Mutations cannot be passed to offspring. They only occur randomly within developing organisms.