Question:
Characteristics repeated in space are chiefly
Characteristics repeated in space are chiefly
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Repeatability Dimensions:
Repeated in Space = STRUCTURAL Meristic traits (Teat number, Rib count, Vertebrae).
Repeated in Time = PRODUCTION Reproduction traits (Lactation milk yield, Egg production).
Repeated in Space = STRUCTURAL Meristic traits (Teat number, Rib count, Vertebrae).
Repeated in Time = PRODUCTION Reproduction traits (Lactation milk yield, Egg production).
Updated On: Sep 7, 2026
- Structural
- Production
- Growth
- Reproduction
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Repeatability in quantitative genetics: traits repeated in time (temporal repeatability, e.g., milk yield across lactations) vs traits repeated in space (spatial repeatability, e.g., structural meristic traits like teat number or vertebra count).
Step 2: Detailed Explanation:
In quantitative genetics and repeatability analysis:
1. Traits Repeated in Space (Spatial Repeatability): Refers to Structural (Meristic Morphological) anatomical characteristics duplicated across bilateral or segmental body dimensions in an individual organism (e.g., number of teats on the udder, number of ribs, number of lumbar vertebrae, bilateral horn length).
2. Traits Repeated in Time (Temporal Repeatability): Refers to Production and Reproduction traits repeated across successive parities/seasons (e.g., milk yield in successive lactations, litter size in successive farrowings, wool fleece weight).
Therefore, characteristics repeated in space are chiefly Structural.
Step 3: Final Answer:
Hence, characteristics repeated in space are chiefly Structural, matching option (A).
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