Question:
Identify the chromosomal aberration from the given diagram
Identify the chromosomal aberration from the given diagram
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In the changed chromosome a segment has been replaced by genes from a different, non-homologous chromosome.
Updated On: Nov 12, 2026
- Deletion
- Duplication
- Inversion
- Translocation
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
Chromosomal aberrations are changes in the structure of a chromosome: loss, repetition, reversal or exchange of segments.
Step 2: Read the diagram
The original chromosome carries genes A B C D E F G H.
In the altered chromosome the end segment is replaced by genes M N O that did not belong to it.
Step 3: Decide the aberration
No gene is simply lost (deletion), repeated (duplication) or reversed (inversion).
Transfer of a segment between non-homologous chromosomes is called translocation.
Final Answer:
The aberration shown is translocation. \[ \boxed{\text{(D) }\text{Translocation}} \]
Chromosomal aberrations are changes in the structure of a chromosome: loss, repetition, reversal or exchange of segments.
Step 2: Read the diagram
The original chromosome carries genes A B C D E F G H.
In the altered chromosome the end segment is replaced by genes M N O that did not belong to it.
Step 3: Decide the aberration
No gene is simply lost (deletion), repeated (duplication) or reversed (inversion).
Transfer of a segment between non-homologous chromosomes is called translocation.
Final Answer:
The aberration shown is translocation. \[ \boxed{\text{(D) }\text{Translocation}} \]
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