Mutations

What mutation has occurred here?

T-G-A-C-C-A

T-G-A-G-C-A

• Substitution

• Deletion

• Insertion

• Frameshift

Which of the following would result in a frameshift mutation?

• Insertions only

• Substitution only

• Deletion only

• Insertions and Deletions

DNA molecule segment is : TTACGCAAG

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

• Substitution

• Deletion

• Insertion

• Inversion

A mutation is defined as:

• A change in the cell's structure

• Anything that changes in an embryo

• Any change in the physical features of a human

• A change in the DNA sequence

ATTTGAGCC- Original

ATTGAGCC - Mutated

The example above is an example of a

• Insertion- Frameshift

• Deletion- Substitution

• Deletion -Frameshift

• All of the above

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.

Which type of mutation does the model demonstrate?

• Deletion

• Substitution

• Insertion

• Translocation

The portion or segment of the DNA strand that codes for a particular protein is called a _____________________.

• gene

• chromosome

• codon

• anticodon

3 bases in a row on the mRNA strand, that call for a particular amino acid to be added to the polypeptide chain:

• chromosome

• gene

• codon

• anticodon

Which statement best defines a mutation?

• a physical trait that negatively impacts the organism

• an adaptive trait that allows the individual to be better fit for survival

• a change in the order, number, or type of bases in the genetic code

• an identical copy of the original DNA strand