Textbook Question
From the following list, identify the types of chromosome changes you expect to show phenotypic consequences.
Paracentric inversion
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6. Chromosomal Variation
Chromosomal Rearrangements: Translocations
Multiple Choice
In the context of chromosomal rearrangements, which mutation involves an exchange of segments between two nonhomologous chromosomes?
A
Deletion
B
Inversion
C
Reciprocal translocation
D
Duplication
Verified step by step guidance1
Understand the definitions of each chromosomal rearrangement: Deletion is the loss of a chromosome segment; Inversion is the reversal of a segment within the same chromosome; Duplication is the repetition of a chromosome segment.
Recognize that a Reciprocal translocation involves the exchange of segments between two nonhomologous chromosomes, meaning chromosomes that are not a pair.
Recall that in Reciprocal translocation, segments from two different chromosomes swap places without any genetic material being lost or gained overall.
Contrast this with other rearrangements that occur within a single chromosome (like inversion and deletion) or involve duplication of segments.
Conclude that the mutation involving an exchange of segments between two nonhomologous chromosomes is Reciprocal translocation.
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