Question:
A type of chromosomal aberration, in which there is no loss or gain of gene complement of the chromosome is ________ .
A type of chromosomal aberration, in which there is no loss or gain of gene complement of the chromosome is ________ .
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Inversion = rearrangement only, no change in gene quantity.
Updated On: May 4, 2026
- deletion
- duplication
- inversion
- translocation
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The Correct Option is C
Solution and Explanation
Concept:
Chromosomal aberrations are structural changes in chromosomes. These can either involve loss/gain of genetic material or just rearrangement.
Step 1: Understand types of aberrations.
• Deletion → Loss of segment
• Duplication → Gain of segment
• Inversion → Segment reversed (no loss/gain)
• Translocation → Exchange between chromosomes (may involve change in position)
Step 2: Identify correct type. In inversion, a segment of chromosome breaks and reinserts in reverse orientation without altering the gene quantity. \[ \text{Gene content remains same → Inversion} \]
Step 3: Analyze options.
• (A) Deletion → Loss $\times$
• (B) Duplication → Gain $\times$
• (C) Inversion → No loss/gain \checkmark
• (D) Translocation → Exchange between chromosomes $\times$
Step 4: Conclusion. \[ \text{Chromosomal aberration with no gene loss/gain = Inversion} \]
Chromosomal aberrations are structural changes in chromosomes. These can either involve loss/gain of genetic material or just rearrangement.
Step 1: Understand types of aberrations.
• Deletion → Loss of segment
• Duplication → Gain of segment
• Inversion → Segment reversed (no loss/gain)
• Translocation → Exchange between chromosomes (may involve change in position)
Step 2: Identify correct type. In inversion, a segment of chromosome breaks and reinserts in reverse orientation without altering the gene quantity. \[ \text{Gene content remains same → Inversion} \]
Step 3: Analyze options.
• (A) Deletion → Loss $\times$
• (B) Duplication → Gain $\times$
• (C) Inversion → No loss/gain \checkmark
• (D) Translocation → Exchange between chromosomes $\times$
Step 4: Conclusion. \[ \text{Chromosomal aberration with no gene loss/gain = Inversion} \]
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