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Worksheets7C Genetics and Mutations Quiz
Total questions: 15
Worksheet time: 8mins
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 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 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 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 does a gene mutation affect?
Protein synthesis
Only one gene
Multiple chromosomes
Long stretches of DNA
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 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 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 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 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 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 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 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
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
