Biology Semester Exam Review

Which of the following would result in a frameshift mutation?

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

Where do mutations occur?

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

Why are insertion and deletion 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.

When there is one less base on the mRNA strand than the DNA strand it is a _________ mutation

• missense
• nonsense
• deletion
• insertion

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

• Substitution
• Deletion
• Insertion
• Inversion

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

• Missense
• Nonsense
• Silent
• Deletion

Point mutation involves

• deletion

• insertion

• duplication

• changes in single base pair

Why is the order of amino acids so important?

• The order of amino acids dictates what shape the protein will fold into.
• It is not important. The protein folding chamber will force the protein to fold into the correct shape.

Any change in the sequence of DNA is...

• transgenic shift
• Single Genotype
• Monohybrid Trait
• Mutation

Are all mutations bad?

• Yes
• No