Question:
What is the pollination type when cross was made between two rametes of a single clone? ______________
What is the pollination type when cross was made between two rametes of a single clone? ______________
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Clone = Genetic Identity. Crossing identical genotypes is always selfing, regardless of how many physically separate trees are involved.
Updated On: Aug 20, 2026
- Self
- Cross
- Often cross
- Both 2 & 3
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Question:
The question tests the conceptual understanding of cloning and its genetic implications for pollination and breeding.
Step 2: Detailed Explanation:
• Definition of a Clone: A clone is a group of genetically identical individuals (rametes) derived from a single parent (ortet) through vegetative propagation.
• Genetic Identity: Because all rametes of a single clone share exactly the same genotype, a "cross" made between two different rametes of the same clone is genetically equivalent to "selfing."
• Breeding Implications: In seed orchards, if two trees of the same clone are planted too close together, their mutual pollination results in self-pollination. This can lead to "inbreeding depression," which results in poor seed quality, reduced germination, and stunted growth in the offspring.
• Comparison: True "cross-pollination" only occurs when pollen is transferred between trees of different genotypes (different clones).
Step 3: Final Answer:
Pollination between two rametes of the same clone is classified as self-pollination.
The question tests the conceptual understanding of cloning and its genetic implications for pollination and breeding.
Step 2: Detailed Explanation:
• Definition of a Clone: A clone is a group of genetically identical individuals (rametes) derived from a single parent (ortet) through vegetative propagation.
• Genetic Identity: Because all rametes of a single clone share exactly the same genotype, a "cross" made between two different rametes of the same clone is genetically equivalent to "selfing."
• Breeding Implications: In seed orchards, if two trees of the same clone are planted too close together, their mutual pollination results in self-pollination. This can lead to "inbreeding depression," which results in poor seed quality, reduced germination, and stunted growth in the offspring.
• Comparison: True "cross-pollination" only occurs when pollen is transferred between trees of different genotypes (different clones).
Step 3: Final Answer:
Pollination between two rametes of the same clone is classified as self-pollination.
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