Mutations
Biology ⇒ Genetics and Heredity
Mutations starts at 10 and continues till grade 12.
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A deletion mutation removes two nucleotides from a gene. What type of mutation is this likely to cause?
A DNA sequence changes from ATG to ATA. If ATG codes for methionine and ATA codes for isoleucine, what type of mutation is this?
A mutation occurs in a gene, changing the codon GAA to GAG. Both codons code for glutamic acid. What type of mutation is this?
Describe how a duplication mutation can affect an organism.
Describe the difference between a germline mutation and a somatic mutation.
A DNA sequence changes from ATG to ATA. If ATG codes for methionine and ATA codes for isoleucine, what type of mutation is this?
A mutation changes the DNA sequence from TAA (stop codon) to CAA (codes for glutamine). What is the effect of this mutation? (1) Protein is shortened (2) Protein is lengthened (3) No effect (4) Protein is deleted
A mutation occurs in a gene, changing the codon GAA to GAG. Both codons code for glutamic acid. What type of mutation is this?
A mutation changes the DNA sequence from TAA (stop codon) to CAA (codes for glutamine). What is the effect of this mutation? (1) Protein is shortened (2) Protein is lengthened (3) No effect (4) Protein is deleted
Which of the following best defines a mutation? (1) A change in the DNA sequence (2) A change in the protein structure only (3) A change in the cell membrane (4) A change in the number of ribosomes
Which of the following best describes a missense mutation? (1) A mutation that introduces a stop codon (2) A mutation that does not change the amino acid (3) A mutation that changes one amino acid to another (4) A mutation that deletes a gene
Which of the following best describes a mutagen? (1) A substance that repairs DNA (2) A substance that causes mutations (3) A type of protein (4) A type of RNA
A mutation that changes a codon for an amino acid into a stop codon is called a ______ mutation.
A point mutation that does not change the amino acid sequence of a protein is called a ______ mutation.
Fill in the blank: A ______ is any agent that increases the rate of mutation above the natural background level.
Fill in the blank: A ______ mutation is a change in a single nucleotide base pair in DNA.
True or False: A single base substitution can result in a missense, nonsense, or silent mutation.
True or False: All frameshift mutations result in a nonfunctional protein.
True or False: All mutations are inherited from parents.
True or False: All mutations result in a change in the phenotype of an organism.
