Mutation

Missense mutation will result in

• Thalassemia

• Down syndrome

• Sickle Cell Anaemia

• Huntington Disease

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.

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

• Substitution
• Deletion
• Insertion
• Inversion

What do mutations change?

• DNA

• Chromosomes

• Genes

Which of the following would result in a frameshift mutation?

• Insertions only
• Substitution only
• Deletion only
• Insertions and Deletions

What is the correct mRNA strand from this DNA?
CAC-GTG-ACA-GCG

• GTG-CAC-TGT-CGC
• CAC-GUG-ACA-GCG
• GUG-CAC-UGU-CGC

This type of substitution codes for a stop codon

• Missense
• Nonsense
• Silent
• Deletion

Tags

NGSS.HS-LS3-2

What amino acid is represented by the codon UUA?

• Phenylalanine
• Tyrosine
• Leucine
• Stop codon

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

• Missense
• Nonsense
• Silent
• Deletion

When an extra base has been added  to the sequence of bases, this is what type of mutation?

• Substitution
• Deletion
• Inversion
• Insertion

Tags

NGSS.HS-LS3-2