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Worksheets7C Genetics and Mutations Quiz
Total questions: 15
Worksheet time: 8mins
What happens in an inversion mutation?
Chromosomes do not separate correctly during cell division
Two chromosomes swap segments
A segment of a chromosome is repeated
The orientation of a chromosome segment is reversed
What happens in a silent mutation?
Chromosomes do not separate correctly during cell division
An unintended stop codon is produced
Protein synthesis is unaffected
A shifted reading frame during translation
What is the result of a frameshift mutation?
Chromosomes do not separate correctly during cell division
A single incorrect amino acid is placed
A shifted reading frame during translation
A segment of a chromosome is repeated
What is overexpression?
A phenomenon where genes are expressed more than normal
An environmental factor that can cause a mutation
A chromosomal mutation that swaps segments
A gene mutation that affects only one gene
What occurs in an insertion mutation?
One or more unintended base pairs are inserted
A segment of a chromosome is reversed
One or more nucleotide base pairs are removed
Two chromosomes swap segments
What happens in a translocation mutation?
The orientation of a chromosome segment is reversed
A segment of a chromosome is repeated
One or more nucleotide base pairs are removed
Two different chromosomes swap chromosome segments
What happens in a deletion mutation?
A stop codon is produced
One or more nucleotide base pairs are removed
One or more unintended base pairs are inserted
A segment of a chromosome is reversed
What does a chromosomal mutation affect?
Protein synthesis
Long stretches of DNA and many genes
A single nucleotide base pair
Only one gene
What happens in nondisjunction?
Chromosomes do not separate correctly during cell division
A single incorrect amino acid is placed
A segment of a chromosome is reversed
One or more unintended base pairs are inserted
What is the result of a nonsense mutation?
Protein synthesis is unaffected
Exactly one incorrect amino acid is placed
An unintended stop codon is produced
A shifted reading frame during translation
What is the result of a missense mutation?
Protein synthesis is unaffected
A shifted reading frame during translation
Exactly one incorrect amino acid is placed
An unintended stop codon is produced
What does a gene mutation affect?
Protein synthesis
Only one gene
Multiple chromosomes
Long stretches of DNA
What is amplification in the context of chromosomal mutations?
Two chromosomes swap segments
A segment of a chromosome is repeated
The orientation of a chromosome segment is reversed
A segment of a chromosome is deleted
What is a mutagen?
A chromosomal mutation that swaps segments
An environmental factor that can cause a mutation
A phenomenon where genes are expressed more than normal
A gene mutation that affects only one gene
What occurs in a substitution mutation?
A segment of a chromosome is reversed
Chromosomes do not separate correctly during cell division
One or more unintended base pairs are inserted
One nucleotide base pair is replaced with a different base pair
