Gene Mutations Questions Correctly Answered
What are mutations? - Correct Answer changes in the genetic material in our cell
What is a point mutation? - Correct Answer when an incorrect nucleotide is put into a
DNA molecule during replication
What can the change of a single nucleotide in a DNA template strand lead to? - Correct
Answer the production of an abnormal protein
What are the two general categories that point mutations within a gene can be divided
into? - Correct Answer -nucleotide pair substitution
-one or more nucleotide pair insertions or deletions
What is a substitution mutation? - Correct Answer an incorrect base is put in place of
another nucleotide in the DNA sequence
Would all substitution mutations lead to a change in the amino acid sequence? - Correct
Answer no multiple codons can code for the same amino acid, so you could have a
mistake in the DNA that can still code for the same amino acid
What is a silent mutation? - Correct Answer have no effect on the amino acid produced
by a codon because of redundancy in the genetic code
What is a missense mutation? - Correct Answer still code for an amino acid, but not
the correct amino acid
Substitution mutations are usually... - Correct Answer missense mutations
What is a nonsense mutation? - Correct Answer change an amino acid codon into a
stop codon
What do nonsense mutations nearly always lead to? - Correct Answer a nonfunctional
protein
What are insertions? - Correct Answer addition of nucleotide pairs in a gene,
lengthening the DNA
What are deletions? - Correct Answer losses of nucleotide pairs in a gene, shortening
the DNA
What is the effect of insertions and deletions? - Correct Answer a disastrous effect on
the resulting protein more often than substitutions do
What may insertions or deletions alter? - Correct Answer the reading frame of the
genetic message producing a frameshift mutation
What are mutations? - Correct Answer changes in the genetic material in our cell
What is a point mutation? - Correct Answer when an incorrect nucleotide is put into a
DNA molecule during replication
What can the change of a single nucleotide in a DNA template strand lead to? - Correct
Answer the production of an abnormal protein
What are the two general categories that point mutations within a gene can be divided
into? - Correct Answer -nucleotide pair substitution
-one or more nucleotide pair insertions or deletions
What is a substitution mutation? - Correct Answer an incorrect base is put in place of
another nucleotide in the DNA sequence
Would all substitution mutations lead to a change in the amino acid sequence? - Correct
Answer no multiple codons can code for the same amino acid, so you could have a
mistake in the DNA that can still code for the same amino acid
What is a silent mutation? - Correct Answer have no effect on the amino acid produced
by a codon because of redundancy in the genetic code
What is a missense mutation? - Correct Answer still code for an amino acid, but not
the correct amino acid
Substitution mutations are usually... - Correct Answer missense mutations
What is a nonsense mutation? - Correct Answer change an amino acid codon into a
stop codon
What do nonsense mutations nearly always lead to? - Correct Answer a nonfunctional
protein
What are insertions? - Correct Answer addition of nucleotide pairs in a gene,
lengthening the DNA
What are deletions? - Correct Answer losses of nucleotide pairs in a gene, shortening
the DNA
What is the effect of insertions and deletions? - Correct Answer a disastrous effect on
the resulting protein more often than substitutions do
What may insertions or deletions alter? - Correct Answer the reading frame of the
genetic message producing a frameshift mutation
