Tris Dodge
@tododge.bsky.social
130 followers 150 following 6 posts
PhD candidate with Molly Schumer | balancing selection, hybridization, structural variation | 🐟🦎🌻🧬👨‍💻 www.tododge.com
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Reposted by Tris Dodge
mydennis.bsky.social
Happy to share work spearheaded by former grad student Colin Shew testing shared duplicated cis regulatory elements (CREs) using an MPRA. While we find some high effect CREs, collectively paralog differences represent modest effects accounting for observed gene expression divergence.
biorxiv-genomic.bsky.social
Influence of cis-regulatory elements on regulatory divergence in human segmental duplications https://www.biorxiv.org/content/10.1101/2025.10.03.680410v1
Reposted by Tris Dodge
Do you know ~60% of human SVs fall in ~1% of GRCh38? See our new preprint: arxiv.org/abs/2509.23057 and the companion blog post on how we started this project and longdust: lh3.github.io/2025/09/29/o.... Work with Alvin Qin
Reposted by Tris Dodge
rachelmoran.bsky.social
First pop gen paper from our lab! We find repeated evolutionary turn over of sex chromosomes in darters contributes to reproductive isolation. Turnover may be an escape hatch to resolve mitonuclear conflict & neo sex chromosomes evolved via a rare recessive mutation. www.biorxiv.org/content/10.1...
Top left: Results of genome-wide association study (GWAS) for sex in E. caeruleum, E. radiosum, and E. spectabile showing sex chromosome turnover has occurred repeatedly. Top right: Phylogeny showing sex chromosome turnover in darters and non-darter percids. Chromosome 9 is the putative ancestral sex chromosome, shared by Perca flavescens and multiple members of the orangethroat darter complex (e.g., E. spectabile, E. pulchellum). Bottom: Schematic depicting repeated turnover of sex chromosomes as a mechanism to resolve mitonuclear conflict and promote speciation.
Reposted by Tris Dodge
psudmant.bsky.social
The Sudmant lab at UC Berkeley is seeking a postdoc to work on a fully funded NIH project to understand differences in DNA repair and somatic mutation across the primate tree of life. Please spread widely to those who may be interested aprecruit.berkeley.edu/JPF05052
Postdoctoral Scholar – Genomics, Aging, Somatic Mutation, Structural Variation, Evolution , Cancer – Integrative Biology
University of California, Berkeley is hiring. Apply now!
aprecruit.berkeley.edu
Reposted by Tris Dodge
mollyschumer.bsky.social
If you're attending #SMBE2025 check out graduate student @tododge.bsky.social 's talk at 11:30 am tomorrow (8:30 pacific time tonight if you're watching remotely). It's a wild ride with lots of complex structural variation, balancing selection, and introgression!
tododge.bsky.social
Excited to talk about balancing selection, hybridization, and independent evolution at the #SMBE2025 hybridization & introgression symposium! Symposium 14: Day 3, Room 2 @ 11:30am Beijing Time
Xiphophorus fish species displaying a false gravid spot
Reposted by Tris Dodge
sexchrlab.bsky.social
🚨Preprint🚨

Sex chromosome identification & genome curation from a single individual with SCINKD
www.biorxiv.org/content/10.1...

Incredible work led by @drpintothe2nd.bsky.social in collaboration w/ @drsimonegable.bsky.social @stuartvnielsen.bsky.social @tonygamble.bsky.social SE Keating & CH Smith
Graphical overview of the biological foundations of the proposed approach. Application of SCINKD to identify XY chromosomes in the Christmas island skink Application of SCINKD to identify previously unannotated sex chromosomes in the Lesser electric ray.
tododge.bsky.social
Please share with early career researchers interested in pursuing a PhD! Our goal is to make the application process more transparent with info sessions and 1:1 mentorship.
stanfordbpp.bsky.social
Applying to Biology PhD programs this year? Let us help!

At BPP, we aim to support students from all backgrounds through the grad school application process. Learn more about grad student life and receive 1-on-1 feedback on your application materials!

Apply here: forms.gle/EvTyUWXFMRSL...
Reposted by Tris Dodge
judithmank.bsky.social
📣📣📣 So pleased to see @vdbijl.bsky.social's stunning analysis of the inheritance and genetics of guppy color diversity out today @natecoevo.nature.com! Deep learning reveals the complex genetic architecture of male guppy colouration. www.nature.com/articles/s41...
tododge.bsky.social
We’ve had success with this hybrid approach, but preliminarily >40x ONT UL alone also seems to get us near T2T. Genome is 720mb. Didn’t collect HiC for this individual and scaffolded to an existing reference
tododge.bsky.social
Black are gaps (contig breaks) and red are telomeres!
tododge.bsky.social
Already seeing big improvements by combining PacBio and ONT Ultralong reads!
Two plots of swordtail genome assemblies generated with PacBio HiFi only and HiFi plus ONT UL data. Black dots represent dots and red dots represent telomeres. The HiFi-only assembly has multiple gaps per chromosome, while the HiFi plus ONT UL assembly has only 2 gaps and is missing only 3 telomeres
Reposted by Tris Dodge
evolvwing.bsky.social
Awesome new paper by @lucalivraghi.bsky.social et al.
doi.org/10.1016/j.cu...
in @currentbiology.bsky.social
on the evo-devo of a butterfly color variation

enjoy the show!
Reposted by Tris Dodge
aphillippy.bsky.social
A project five years in the making, we've now published complete "T2T" genomes for six additional ape species! It turns out that finishing (and analyzing) six genomes is slightly more work than one... doi.org/10.1038/s415...
A phylogeny of the 7 ape genomes that have now been completed from "T2T", with Homer Simpson representing mankind.
Reposted by Tris Dodge
dparichy.bsky.social
New NIH funded research from our group now out. We are interested in development and evolution of cell types and adult phenotypes. In this paper, postdoc Dylan Huang and collaborators asked how a pigmentary ornament of bright white cells develops on the fin of zebrafish. www.pnas.org/doi/10.1073/...
zebrafish pigment cells
Reposted by Tris Dodge
martynazwoinska.bsky.social
Finally ready to see the world! Theories of balancing selection - past, present and future: www.biorxiv.org/content/10.1... A true collaborative effort that brought together theoreticians and empiricists, models, data, and fresh perspectives on how balancing selection can shape genetic variation.
A century of theories of balancing selection
Traits that affect organismal fitness are often very genetically variable. This genetic variation is vital for populations to adapt to their environments, but it is also surprising given that nature (...
www.biorxiv.org
Reposted by Tris Dodge
woods.stanford.edu
Rising temperatures are not slowing #mosquitoes down... A new study coauthored by Stanford's Lisa Couper and @stanfordwoods.bsky.social Erin Mordecai finds that mosquitoes -- and the diseases they carry -- can adapt to hotter temperatures. Read the study: bit.ly/3PqTNw8
Reposted by Tris Dodge
gcbias.bsky.social
Congrats to @jeffgroh.bsky.social et al on publication of "Ancient structural variants control sex-specific flowering time morphs in walnuts and hickories"

www.science.org/doi/10.1126/...
Science magazine front cover. Picture of a walnut in its opened shell. The text reads "All about timing. Mating type evolution in walnuts and pecans" graphical abstract:
"In Juglans (top left) and Carya, two morphs show complementary temporal separation between male and female flowering (heterodichogamy). Mating types are controlled by two nonhomologous single-locus mechanisms that arose in the common ancestor of each genus, respectively. (Bottom left) Simplified schematic of a putative functional regulatory element at the Juglans locus. (Bottom right) Strong genotypic correlations across the Carya locus indicate a lack of recombination between two colinear haplotypes with similar gene content."
tododge.bsky.social
Moved here recently and figured I should shamelessly promote our recent paper for my very first post.