Question:
Mutation which occurs in one layer or more layers at the top of apex is known as
Mutation which occurs in one layer or more layers at the top of apex is known as
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Most commercially stable variegated ornamental plants and bud sports in fruits are maintained as periclinal chimeras via vegetative cuttings or grafting.
Updated On: Jul 10, 2026
- Mericlinal Chimera
- Periclinal chimera
- Sectorial chimera
- Segmented chimera
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
A chimera is a plant with genetically distinct tissue layers arising from somatic mutations in the shoot apical meristem.
Step 2: Detailed Explanation:
- Periclinal Chimera: A mutation occurring in one or more complete histogenic layers at the apex. This type is highly stable during vegetative propagation because the mutated layer divides parallel to the surface.
- Mericlinal Chimera: A mutation occupying only a section of a single histogenic layer. It is unstable and usually reverts to normal or transitions to a periclinal state.
- Sectorial Chimera: A mutation affecting a wedge-shaped section of all tissue layers. It is unstable and prone to sorting out during growth.
Step 3: Final Answer:
A mutation that is stable in one or more complete apical layers is classified as a periclinal chimera.
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