Evolution of Large Polymorphic Inversions in a Panmictic Songbird.

ABSTRACT: Chromosomal inversions have long been appreciated as an important source of genetic diversity, local adaptation, and speciation. However, selection pressures maintaining ancestral and derived alleles at high frequency over extended periods of time remain poorly characterized. Using genome-wide single-nucleotide polymorphism markers and shared barcodes of linked-read sequences from 20 wild and 7 captive zebra finches Taeniopygia guttata, we systematically scanned a high-quality zebra finch reference genome and identified all large polymorphic inversions that segregate at high minor allele frequencies. Apart from the known polymorphic inversions on chromosomes Tgu5, Tug11, Tgu13, and TguZ, we characterized two inversions on microchromosomes Tgu26 and Tgu27 and identified another eight putati

SUBMITTER: Pei Y 

PROVIDER: S-EPMC12612816 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature