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Preprint links genomic inbreeding to growth decline in Chinese bahaba

A bioRxiv preprint reports severe growth depression in Chinese bahaba after two generations of closed captive breeding from 18 wild founders. Whole-genome analysis linked the decline to increased genomic inbreeding and identified candidate pathways relevant to conservation breeding.

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Saimaa Ringed Seals Retain About 1% of Y-Chromosome Diversity

A chromosome-level reference genome and resequencing data from 80 Saimaa ringed seals show extremely limited Y-chromosomal diversity compared with other ringed seals. The bioRxiv preprint estimates that the population retains about 1% of the broader Y-chromosomal diversity and 5% of mitochondrial diversity.