Extensive transgressive gene expression in testis but not ovary in the homoploid hybrid Italian sparrow.

ABSTRACT: Hybridization can result in novel allelic combinations which can impact the hybrid phenotype through changes in gene expression. While misexpression in F₁ hybrids is well documented, how gene expression evolves in stabilized hybrid taxa remains an open question. As gene expression evolves in a stabilizing manner, break-up of co-evolved cis- and trans-regulatory elements could lead to transgressive patterns of gene expression in hybrids. Here, we address to what extent gonad gene expression has evolved in an established and stable homoploid hybrid, the Italian sparrow (Passer italiae). Through comparison of gene expression in gonads from individuals of the two parental species (i.e., house and Spanish sparrow) to that of Italian sparrows, we find evidence for strongly transgressi

SUBMITTER: Papoli Yazdi H 

PROVIDER: S-EPMC9542029 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature