
Understanding Gene and Chromosomal Mutations
Authored by Binh Hoang
Science
9th Grade

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a gene mutation?
A change in the number of chromosomes
A change in the sequence of nucleotides in DNA
A change in the structure of a chromosome
A change in the cell membrane
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of a chromosomal mutation?
Point mutation
Inversion
Silent mutation
Missense mutation
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain how nondisjunction can lead to genetic disorders.
It causes a change in the DNA sequence.
It results in an extra or missing chromosome.
It leads to the deletion of a gene.
It causes a gene to be duplicated.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of a point mutation in a gene?
A change in the entire chromosome
A change in a single nucleotide
A change in the number of chromosomes
A change in the cell's shape
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best describes a block mutation?
A mutation that affects a single nucleotide
A mutation that affects large segments of a chromosome
A mutation that occurs in the ribosome
A mutation that affects the cell wall
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does a frameshift mutation occur?
By the substitution of one nucleotide for another
By the insertion or deletion of nucleotides
By the duplication of a chromosome
By the inversion of a chromosome segment
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary cause of Down syndrome?
A point mutation
Nondisjunction of chromosome 21
A deletion mutation
An inversion mutation
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