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Mariana Harris

@mharris.bsky.social
36 followers 34 following 1 posts

Biomath PhD @UCLA interested in population genetics

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Mariana Harris @mharris.bsky.social · 07/05/2026
The final chapter of my dissertation is out in PNAS! This was an incredibly fun and challenging project to work on. Check it out!
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Reposted by Mariana Harris
Michael Wasney @michaelwasney.bsky.social · 31/03/2026
I am thrilled to present my latest work, which finds that bacterial genetic diversity (in the form of co-colonizing strains of the same species and the genetic variants they harbor) is uniformly distributed along the gut. Read more about it at Nature Communications! doi.org/10.1038/s414...
doi.org
Uniform bacterial genetic diversity along the gut - Nature Communications
Here, the authors show that while species composition varies significantly across gut regions, genetic diversity within species is remarkably uniform and driven by similar strain frequencies along the...
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Reposted by Mariana Harris
Nandita Garud @nanditagarud.bsky.social · 31/03/2026
I am excited to share our latest paper, Uniform bacterial genetic diversity along the gut, now out in Nature Communications! www.nature.com/articles/s41.... (1/n)
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Nandita Garud @nanditagarud.bsky.social · 17/12/2025
Grateful to share our paper on gene-specific selective sweeps in human gut microbiomes, now out in Nature! It has been a joy to work with @rwolff.bsky.social, whose insights and hard work made this possible. www.nature.com/articles/s41...
nature.com
Gene-specific selective sweeps are pervasive across human gut microbiomes - Nature
Development and application of the integrated linkage disequilibrium score (iLDS) reveals both selective pressures impacting the human gut microbiome and the mechanisms by which gut bacteria adapt to ...
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Science Magazine @science.org · 16/05/2025
A large-scale genomic study in Science of over 1500 individuals from 139 underrepresented Indigenous groups across northern Eurasia and the Americas sheds new light on the ancient migrations that shaped the genetic landscape of North and South America. Learn more: scim.ag/4mi1yUf
scim.ag
From North Asia to South America: Tracing the longest human migration through genomic sequencing
Genome sequencing of 1537 individuals from 139 ethnic groups reveals the genetic characteristics of understudied populations in North Asia and South America. Our analysis demonstrates that West Siberi...
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Devansh Pandey @devpandey.bsky.social · 11/04/2025
Thrilled to share that our study on the genetic architecture and evolutionary constraints shaping human pelvic form is now out in Science(@science.org)! This work was brilliantly led by my lab mate @xliaoyi.bsky.social Check it out here: www.science.org/doi/10.1126/...
science.org
The genetic architecture of and evolutionary constraints on the human pelvic form
Human pelvic evolution following the human-chimpanzee divergence is thought to result in an obstetrical dilemma, a mismatch between large infant brains and narrowed female birth canals, but empirical ...
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Reposted by Mariana Harris
Nandita Garud @nanditagarud.bsky.social · 13/11/2024
Delighted to share that our paper on discovering selective sweeps with haplotype statistics in aDNA is now out in Nat. Comm! www.nature.com/articles/s41... Wonderful collaboration with Vagheesh Narasimhan, Devansh Pandey, and @mharris.bsky.social
nature.com
Leveraging ancient DNA to uncover signals of natural selection in Europe lost due to admixture or drift - Nature Communications
Large-scale ancient DNA (aDNA) studies offer the chance to examine genomic changes over time, providing direct insights into human evolution. Here the authors use aDNA from 708 European samples to ide...
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Ricky Wolff @rwolff.bsky.social · 03/01/2024
I'm so excited to share this new paper (with my great advisor @nanditagarud.bsky.social), on selective sweeps in gut bacteria. In this long thread, I’m going to go over our results, but I also want to highlight some of the incredible work that set the stage for us www.biorxiv.org/content/10.1...
biorxiv.org
Pervasive selective sweeps across human gut microbiomes
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
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Nandita Garud @nanditagarud.bsky.social · 14/11/2023
We are delighted to share our work on “Inference of the demographic histories and selective effects of human gut commensal microbiota over the course of human history”! www.biorxiv.org/content/10.1... Please check out the full tweet thread and GIF here: twitter.com/nanditagarud...
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