Genetic Mutations Worksheet

What type of mutation involves adding or deleting bases from the DNA, which results in new codons (a shift in the reading of the codons)?

• point mutation

• frameshift mutation

• silent mutation

• chromosomal mutation

What type of mutation is shown in the picture?

• substitution

• insertion

• deletion

• translocation

What type of mutation is shown in this picture?

• No mutation

• Substitution

• Deletion

• Insertion

What is a point mutation in genetics?

• A mutation that affects only a single nucleotide in the DNA sequence.

• A mutation that results in the deletion of a segment of DNA.

• A mutation that involves the exchange of large segments of DNA between chromosomes.

• A mutation that affects the entire chromosome structure.

Which type of mutation involves the insertion or deletion of one or more nucleotides in a DNA sequence?

• Point mutation

• Frameshift mutation

• Silent mutation

• Nonsense mutation

What is a silent mutation?

• A mutation that changes a single nucleotide, but does not change the amino acid created.

• A mutation that results in a stop codon, terminating the protein early.

• A mutation that changes the DNA sequence but has no observable effects on the organism.

• Both A and C are correct.

What causes genetic mutations?

• Only exposure to certain chemicals

• Only errors in DNA replication

• Both exposure to certain chemicals and errors in DNA replication

• Genetic mutations do not have identifiable causes.

Which type of mutation results in a premature stop codon?

• Missense mutation

• Nonsense mutation

• Silent mutation

• Frameshift mutation

What is a chromosomal mutation?

• A mutation that affects the number or structure of entire chromosomes.

• A mutation that changes only one nucleotide in the DNA sequence.

• A mutation that results in the deletion of a few nucleotides.

• A mutation that occurs only in non-coding regions of DNA.

Which of the following is a cause of genetic mutations?

• Consuming too much sugar

• Physical exercise

• Ultraviolet radiation from the sun

• Listening to loud music