Mutations Practice

Original DNA: CAGAAT Mutated DNA: CAGAT = ​ (a)   Mutated DNA: CAGCAAT = ​ (b)   Mutated DNA: CAGTAT = ​ (c)  

• Deletion

• Insertion

• Substitution

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

original chromosome
ABC-DEF
mutated chromosome
AC-DEF
This is a _____________ mutation.

• frameshift

• point

• deletion

Tags

NGSS.HS-LS3-2

original chromosome
ABC-DEF
mutated chromosome
ABBC-DEF

• duplication

• point

• frameshift

Tags

NGSS.MS-LS3-1

original chromosome
ABC-DEF
mutated chromosome
AED-CBF

• duplication

• translocation

• inversion

Tags

NGSS.HS-LS3-2

A mutation in which only one nucleotide is altered is called a:

• Frameshift Mutation

• Deletion Mutation

• Point Mutation

• Insertion Mutation

Tags

NGSS.HS-LS3-2

What type of mutation involves substituting a DNA base with a different base but still forms the same protein?

• Nonsense Mutation

• Missense Mutation

• Inversion Mutation

• Silent Mutation

What type of mutation causes a premature stop codon to appear in the amino acid sequence?

• Deletion Mutation

• Nonsense Mutation

• Missense Mutation

• Silent Mutation

The chromosomal mutation shown in the image is a

• deletion

• duplication

• inversion

• translocation

Identify the mutation in the picture.

• Inversion

• Duplication

• Deletion

• Translocation

Tags

NGSS.HS-LS3-2