IB Bio Mutation

Where do mutations occur?

• DNA and RNA
• DNA 
• RNA
• mRNA and tRNA

Tags

NGSS.HS-LS3-2

This type of substitution codes for a stop codon

• Missense
• Nonsense
• Silent
• Deletion

Tags

NGSS.HS-LS3-2

A type of substitution in which no  amino acids change is called 

• Missense
• Nonsense
• Silent
• Deletion

DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTACGCAAC. This is an example of ___ mutation.

• Base Substitution
• Base Insertion
• Base Inversion
• Translocation

Tags

NGSS.HS-LS3-2

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

• Insertion- Frameshift
• Deletion- Substitution
• Deletion -Frameshift
• All of the above

Tags

NGSS.HS-LS3-2

Mutations that occur at a single point in the DNA sequence are:

• frameshift
• point
• deletion

Tags

NGSS.HS-LS3-2

Why are insertion and deletion (frameshift) mutations so harmful?

• They change all of the codons from the mutation on down the line, which changes the amino acid sequence
• They insert things that an organism doesn't need.
• They often delete things that organisms need.
• Insertion and deletions are not any more harmful than substitution mutations.

Tags

NGSS.HS-LS3-2

When a nucleotide is added to a DNA sequence, which of the following will occur?

• Point Mutation

• Silent Mutation

• Frameshift Mutation

• Gene Duplication

Tags

NGSS.HS-LS3-2

A point mutation that does not change the amino acid sequence is known as a(n) ____________ mutation.

• Frameshift

• Nondisjunction

• Inversion

• Silent

Tags

NGSS.HS-LS3-2

What type of chromosomal mutation is this?

• Translocation
• Inversion
• Deletion
• Duplication