AP Bio U6L9 Mutations and Their Effect on Phenotypes

Which of the following is NOT a type of point mutation?

• Silent

• Missense

• Nonsense

• Frameshift

Tags

NGSS.HS-LS3-2

What does a nonsense mutation result in?

• A change in an mRNA codon for an amino acid to a stop codon

• A change in an mRNA codon for an amino acid to another amino acid

• A change in an mRNA codon for an amino acid to a silent codon

• A change in an mRNA codon for an amino acid to a start codon

Tags

NGSS.HS-LS3-2

What is the effect of a frameshift mutation on the genetic code?

• It causes a silent mutation

• It alters the reading frame

• It has no effect

• It only affects non-coding regions

Tags

NGSS.HS-LS3-2

What is the result of a chromosomal deletion?

• A piece of a chromosome is duplicated.

• A piece of a chromosome is lost.

• A piece of a chromosome is inverted.

• A piece of a chromosome is translocated.

Tags

NGSS.HS-LS3-2

Which of the following is a structural mutation?

• Inversion

• Duplication

• Translocation

• All of the above

What is a chromosomal duplication?

• A piece of one chromosome breaking off and attaching to a different chromosome.

• A piece of one chromosome breaking off and attaching to the sister chromatid.

• A chromosome being deleted entirely.

• A chromosome being inverted.

Tags

NGSS.HS-LS3-2

Label each of the following chromosomal mutations

d

c

b

a

Duplication

Deletion

Inversion

Translocation

What type of point mutation is displayed in this example?

ORIGNAL:

AGC-CGT-TGT-ACT

MUTATION:

AGC-CGT-TGG-ACT

• Slient

• Missense

• Nonsense

Answer explanation

The error in base does not change the amino acid.

ORIGNAL:

AGC-CGT-TGT-ACT

UCG-GCA-ACA-UGA

serine-alanine-threonine-stop

MUTATION:

AGC-CGT-TGG-ACT

UCG-GCA-ACC-UGA

serine-alanine-threonine-stop

Tags

NGSS.HS-LS3-2