Multiple Choice
A chromosome has an inversion. Which of the following describes a pericentric inversion?
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15. Gene Expression
Mutations
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Which best describes chromosomal deletion?
A
A segment of a chromosome is removed, resulting in a loss of genetic material.
B
A segment of a chromosome is translocated to a non-homologous chromosome.
C
A segment of a chromosome is duplicated, resulting in extra genetic material.
D
A segment of a chromosome is inverted, reversing the order of genes.
Verified step by step guidance1
Understand that chromosomal deletion refers to a type of mutation where a part of a chromosome is missing, leading to a loss of genetic material.
Recognize that this is different from other chromosomal mutations such as translocation, duplication, or inversion.
In translocation, a segment of a chromosome is moved to a non-homologous chromosome, which does not involve loss of genetic material.
In duplication, a segment of a chromosome is copied, resulting in extra genetic material rather than a loss.
In inversion, a segment of a chromosome is reversed, changing the order of genes but not the amount of genetic material.
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