From: Charles Plessy Date: Mon, 16 Jun 2025 23:50:42 +0000 (+0900) Subject: Kafei X-Git-Url: https://source.charles.plessy.org/?a=commitdiff_plain;h=e0f2f4ec65dc7a49c320a0eb8b77158afa888ec8;p=source--%2F.git Kafei --- diff --git a/biblio/40274362.mdwn b/biblio/40274362.mdwn new file mode 100644 index 00000000..78b1d2cd --- /dev/null +++ b/biblio/40274362.mdwn @@ -0,0 +1,10 @@ +[[!meta title="Extreme heterochiasmy and high rates of sex-reversed recombination result in large yet homomorphic sex chromosomes in the Emei moustache toad."]] +[[!tag frog sex variants]] + +Xie S, Li J, Chen W, Fong LJM, Huang C, Feng Y, Ai Q, Zhao M, Mank JE, Wu H. + +Genome Res. 2025 Jun 2;35(6):1325-1336. doi:10.1101/gr.280161.124 + +Extreme heterochiasmy and high rates of sex-reversed recombination result in large yet homomorphic sex chromosomes in the Emei moustache toad. + +[[!pmid 40274362 desc=" “Population genetic data showed high rates of sex-reversed XY-type females, and recombination between the X and Y Chromosomes in these individuals helps maintain the integrity of sequence and gene expression on the Y Chromosome.” “Despite this large size and the assumption that inversions catalyze recombination suppression between the X and Y Chromosomes, we found little evidence of XY structural variation.” “High collinearity and similarity between X and Y haplotypes implicate a pre-existing pattern of low recombination itself, likely predating the origin of Chr 1 as the sex chromosomes, rather than structural variation, in sex chromosome formation.” "]] diff --git a/tags/variants.mdwn b/tags/variants.mdwn index 001511c6..c280fbe4 100644 --- a/tags/variants.mdwn +++ b/tags/variants.mdwn @@ -87,6 +87,10 @@ the same transposon participate in an aberrant transposition event to a new site”. They give an example where the two transposons are identical copies on sister chromatids in G2 phase. +[[Xie and coll., 2025|biblio/40274362]] showed that in Emei moustache toad, +recombination between X and Y chromosomes was low despite the absence of +large-scale inversions. + ## Indels Indel-seq ([[Min and coll., 2023|biblio/37402370]]) shows insertions at