Mutations
Biology ⇒ Genetics and Heredity
Mutations starts at 10 and continues till grade 12.
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See sample questions for grade 10
A frameshift mutation is more likely to have a drastic effect on a protein than a point mutation. Explain why.
Describe how a substitution mutation can lead to a genetic disorder.
Describe how exposure to UV light can cause mutations in DNA.
Describe the difference between a duplication and a deletion chromosomal mutation.
Describe what happens during a deletion mutation.
Explain the difference between a germline mutation and a somatic mutation.
A DNA sequence changes from CCG to CCA, but both code for the same amino acid. What type of mutation is this?
A scientist observes that a population of bacteria exposed to an antibiotic develops resistance over several generations. Explain how mutations contribute to the development of antibiotic resistance in this population.
Which of the following best describes a chromosomal mutation?
(1) A change in a single base pair
(2) A change in the number or structure of entire chromosomes
(3) A change in the shape of a protein
(4) A change in the cell membrane
Which of the following best describes a neutral mutation?
(1) It is always harmful
(2) It has no effect on the organism
(3) It is always beneficial
(4) It causes cancer
Which of the following best describes a point mutation?
(1) A change in a single nucleotide base in DNA
(2) The addition of a whole chromosome
(3) The loss of an entire gene
(4) The duplication of a chromosome segment
Which of the following is a possible effect of a missense mutation?
(1) No change in protein
(2) Early stop codon
(3) Change in one amino acid
(4) Loss of a chromosome
A change from the DNA sequence ATG to ATA is an example of a _______ mutation.
A mutation that changes a codon for an amino acid into a stop codon is called a _______ mutation.
A mutation that changes the number of chromosomes in a cell is called a _______ mutation.
A mutation that does not change the amino acid sequence of a protein is called a _______ mutation.
True or False: All mutations are harmful to an organism.
True or False: All mutations in DNA are passed on to the next generation.
True or False: Mutations are always caused by environmental factors.
True or False: Mutations are essential for evolution.
