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ICAR JRF Fish Genetics And Breeding 29 Jun 2024Shift 1
MCQ (Single Correct)
+4
−1
Outlier loci are often associated with
EXPLANATION
Genetic Differentiation
- Genomic Outlier Loci:
- In population genomics (genome scans), most neutral genetic loci across the genome exhibit similar levels of genetic differentiation ($F_{ST}$) determined by genetic drift and gene flow.
- Outlier loci are loci that exhibit exceptionally high (or low) $F_{ST}$ values that deviate significantly from neutral genome-wide background expectations.
- Unusually high differentiation ($F_{ST}$ outliers) indicates divergent directional selection driving local adaptation to specific ecological niches, temperature clines, salinity gradients, or pathogens.
- nalysis:
- (Genes involved in local adaptation): Correct.
Correct option: (2) Genes involved in local adaptation
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