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David Bass

@davidb256.bsky.social
209 followers 257 following 63 posts

he/him | PhD student worker doing computational genetics at JHU | TRU-UE Local 197 member | quizbowler, PACE member | UVA alumnus

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David Bass @davidb256.bsky.social · 28/09/2026
is this the greatest #ratio in modern science
A screenshot of a Google Scholar search result that shows the 2017 paper "DBSCAN revisited, revisited" with more than 10 times as many citations as the 2015 paper "DBSCAN revisited"
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David Bass @davidb256.bsky.social · 14/09/2026
My first preprint of grad school is up on bioRxiv. It's been an exciting journey, from getting inspired by a conversation about squid polymerases ~1.5 years ago, presenting at ISMB this summer, and now submitting for peer review!
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David Bass @davidb256.bsky.social · 06/09/2026
the real sea people are the ones who violated Zeus' Law along the way
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David Bass @davidb256.bsky.social · 25/08/2026
google sheets does not let you simultaneously underline and strikethrough text in a cell... oppression of my shift+alt+5-based lifestyle
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David Bass @davidb256.bsky.social · 07/08/2026
the Mississippi–Louisiana border was drawn at the Mississippi River, but a Mississippi River long past. Extinct oxbows are visible all along the border on Google Maps.
Google Maps screenshot showing several miles of the Mississippi–Louisiana border as a dotted line. The line mostly conforms to the river, but contains oxbow shapes that reflect long-gone changes in the River's flow
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David Bass @davidb256.bsky.social · 03/08/2026
why is it the "roof" of your mouth and not the "ceiling"
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David Bass @davidb256.bsky.social · 03/08/2026
the map on the Wikipedia page "Autonomous communities of Spain" (Habbit 2007) abstracts out Morocco into just a word, making Melilla and Ceuta appear as islands
A map of Spain showing its autonomous communities, which are its first level of regional administration. Ceuta and Melilla, two Spanish exclaves that in the region of North Africa otherwise controlled by Morocco and are in the news, appear as islands instead of parts of North Africa, since the map does not shade in or draw borders for anything not owned by Spain.
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David Bass @davidb256.bsky.social · 14/07/2026
it was exciting to get so many good (and tough!) questions yesterday! #ISMB2026
Photo of me standing next to my poster at a research conference.
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David Bass @davidb256.bsky.social · 08/07/2026
excited for #ISMB next week! come talk to me about recursive splicing on Monday at poster A-171
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David Bass @davidb256.bsky.social · 06/04/2026
the Wikipedia page for the United States Central Command specifies that the United States Space Command "is among four [commands] that are headquartered outside their area of operations"
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David Bass @davidb256.bsky.social · 05/03/2026
daily inspo: Push an API key to GitHub! You can do it!
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David Bass @davidb256.bsky.social · 04/03/2026
apparently this variant of the Sankey diagram is called an "alluvial plot" (fig. from Behling et al. 2024, doi.org/10.1186/s401...)
A plot showing the flow of metagenetic material in patients receiving fecal microbiota transplantation. Thick, colorful bands connect a column of donor patients on the left to a column of recipient patients on the right.
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David Bass @davidb256.bsky.social · 24/02/2026
matplotlib's `wheat` color is a 10/10
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David Bass @davidb256.bsky.social · 13/02/2026
`|=` is a valid operator in Python for replacing a list with its union with another list, e.g. `x |= y` !!!!
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David Bass @davidb256.bsky.social · 20/01/2026
the #1 reason not to use inline suggestions from Copilot is to preserve the joy of typing `if __name__ == "__main__":`
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David Bass @davidb256.bsky.social · 18/01/2026
no other choice is a great movie and contains a lot of really fun camera tricks with phone/tablet screens
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David Bass @davidb256.bsky.social · 16/12/2025
i've been unknowingly abbreviating "alignment" as both "alnmt" and "almnt" and it has finally caught up with me
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David Bass @davidb256.bsky.social · 09/12/2025
figure from [Sibley et al. 2015](doi.org/10.1038/natu...) that shows how the brain dominates every other tissue's expression of long genes. each line is essentially a histogram, normalized w.r.t. the brain transcriptome's distribution. cool that neural complexity manifests in such a simple stat
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David Bass @davidb256.bsky.social · 09/12/2025
nearly had a crisis of faith in Snakemake today
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David Bass @davidb256.bsky.social · 18/11/2025
so much depends upon Cloudflare service even the poetry- foundation dot org.
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David Bass @davidb256.bsky.social · 05/11/2025
biblically accurate sequence logo (Hsiao et al. 2018, Genome Res., fig. 2G)
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David Bass @davidb256.bsky.social · 10/10/2025
interesting use of popgen in distinguishing SNVs from RNA edit sites: "a pair of SNPs within the mRNA ... possess perfect allelic linkage. In contrast ... RNA editing sites do not generally show significant allelic linkage with each other nor with SNPs" (L-GIREMI, Liu et al. 2023 Genome Biol.)
A figure panel showing a sketch of how, due to genetic linkage, SNPs are distinguished from RNA editing sites by sharing more mutual information.
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David Bass @davidb256.bsky.social · 01/09/2025
it's the kind of "prepping for union's Labor Day BBQ" morning that reminds a man just how heavy four watermelons can be
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David Bass @davidb256.bsky.social · 28/08/2025
NYT Mini seems to be paywalled starting today :/
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Reposted by David Bass
Molecular Biology and Evolution @molbioevol.bsky.social · 20/08/2025
@jcbnunez.bsky.social et al. present an expanded release of the community-generated resource Drosophila Evolution over Space and Time (DEST 2.0), and showcase it by studying the species' demographic history and signatures of adaptation. 🔗 doi.org/10.1093/molbev/msaf132 #evobio #molbio #drosophila
MBE - Footprints of Worldwide Adaptation in Structured Populations of Drosophila melanogaster Through the Expanded DEST 2.0 Genomic Resource
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David Bass @davidb256.bsky.social · 20/08/2025
accidentally applying `.set_xbound(0, 1)` instead of `.set_ybound(0, 1)` turns violin plots into KDE plots that cling to the walls
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David Bass @davidb256.bsky.social · 19/08/2025
DEST 2.0 is now up on MBE! academic.oup.com/mbe/article/...
academic.oup.com
Footprints of Worldwide Adaptation in Structured Populations of Drosophila melanogaster Through the Expanded DEST 2.0 Genomic Resource
Abstract. Large-scale genomic resources can place genetic variation into an ecologically informed context. To advance our understanding of the population g
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David Bass @davidb256.bsky.social · 14/08/2025
beating the dead horse here, but I just tried my hand at asking GPT-4.1 (JHU gives us access to a bunch of premium LLMs for free) to help me look for a certain type of data, and it told me about four papers, precisely one of which actually exists. impressively wasteful
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David Bass @davidb256.bsky.social · 05/08/2025
fascinated by this plot for listing permutations (namely, the orders in which four introns can be spliced from a given RNA transcript) and denoting their frequencies with line thickness and shade. It avoids needing to enumerate all 4! permutations. from Choquet et al. 2023 (Nat. Struct. Mol. Biol.)
Panel of figure 2 of Choquet et al. 2023 "Pre-mRNA splicing order is predetermined and maintains splicing fidelity across multi-intronic transcripts" (Nat. Struct. Mol. Biol.) that uses zig-zagging lines of different thicknesses and (gray) colors to show frequencies of permutations of splicing order of four introns in a representative transcript.
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David Bass @davidb256.bsky.social · 23/07/2025
is there a pre-built/easy way to filter a BAM file to the reads that are aligned spliced over a given intron? The best that I can come up with is to do initial filtering with pysam's fetch function, then examine each read's alignment position and CIGAR string
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Reposted by David Bass
omerbartov.bsky.social @omerbartov.bsky.social · 15/07/2025
My NYT op-ed this morning I’m a Genocide Scholar. I Know It When I See It. www.nytimes.com/2025/07/15/o...
nytimes.com
Opinion | I’m a Genocide Scholar. I Know It When I See It.
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David Bass @davidb256.bsky.social · 14/07/2025
just learned that you can seamlessly concatenate sequences produced by brace expansion with explicit strings in Bash, e.g. `{1..22} X Y` to list all chromosome names. truly a language of many tricks and wiles
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David Bass @davidb256.bsky.social · 09/07/2025
mmmm alignment to transcriptome :)
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Reposted by David Bass
Olúfẹ́mi O. Táíwò @olufemiotaiwo.bsky.social · 25/06/2025
crush your enemies, see them driven before you, and hear the lamentations of their consultants
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David Bass @davidb256.bsky.social · 23/06/2025
today is a good day because I saw the Sucellus statue at the Walters
Picture from the Walters Museum of Art of their ~foot-tall bronze statue of the Celtic/Gallo-Roman deity Sucellus, standing in contraposto and holding up a mallet that has been lost to time. Floating behind him is a large mallet with five smaller mallets protruding from its head.
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David Bass @davidb256.bsky.social · 27/05/2025
I just finished Marilynne Robinson's Gilead. Incredible book about living on the edge of political violence and celebrating uncertainty. Makes me want to read the New Testament
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David Bass @davidb256.bsky.social · 16/04/2025
the MD pride flowing through my veins today has got me like
An image of Mithrun, an anime character from Dungeon Meshi, photoshopped to be decked out in Maryland gear and hanging out in Baltimore's Innher Harbor. She is non-chalant, but conveys great pride in her state.
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Reposted by David Bass
Jeffrey Ross-Ibarra @jrossibarra.bsky.social · 16/04/2025
Apparently not all my popgen advice is good.
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David Bass @davidb256.bsky.social · 08/04/2025
had a great time competing in @naqt.com's Intercollegiate Championship Tournament this weekend with my JHU teammates!
Group photo of the Johns Hopkins University quizbowl team, shortly before round 1 of NAQT's 2025 Intercollegiate Championship Tournament. We are (mostly) wearing matching navy team sweaters. We sit in a large hotel convention space.
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David Bass @davidb256.bsky.social · 26/03/2025
how it feels to zoom out in order to see previous lines of output in a Linux screen after having your (foolish) attempt to scroll rewarded with a bunch of "^]]A"s
A promotional image of MacGyver, looking cool and carrying a missile, for the original '80s TV series.
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David Bass @davidb256.bsky.social · 16/03/2025
my Jupyter notebooks are vibrant ecosystems in which data analysis for my research and Balatro odds calculations coexist side-by-side (the expected xMult from five Bloodstone procs is 3.05)
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Reposted by David Bass
Eric Topol @erictopol.bsky.social · 11/03/2025
"The real crisis is not that public health — which is fundamentally about policies dictating the distribution of resources required to protect human life — has been politicized. It is that it has not been politicized nearly enough."— @ericreinhart.bsky.social www.nature.com/articles/d41...
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David Bass @davidb256.bsky.social · 10/03/2025
my partner and I just watched Koyaanisqatsi on archive.org and it was reversed, but we didn't notice until after finishing it... I was like "oh cool the music is Einstein on the Beach but backwards" and "wow you don't notice that the space shuttle explodes in reverse until a minute in"
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Reposted by David Bass
Stand Up for Science! @standupforscience.net · 05/03/2025
2 DAYS until we STAND UP FOR SCIENCE! More information on local sites available at www.standupforscience2025.org ☀️ #standupforscience2025
Navy background with white text that says "2 days until stand up for science"
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David Bass @davidb256.bsky.social · 14/02/2025
it's Sextidi the 26th of Pluviôse in the year 233, the day of the topologically associating domain
Figure 1 from Matharu and Ahituv 2015 "Minor Loops in Major Folds" shows (A) a cartoon of chromatin in the nucleus partitioned into differently colored topologically associating domains (TADs), (B) a cartoon of an individual TAD's structure and interactions with the nuclear membrane, and (C) a genetic track displaying regulatory elements, genes, and TAD boundaries within a single (active) TAD compartment, highlighted with a green triangle evocative of HiC heatmap output.
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David Bass @davidb256.bsky.social · 13/02/2025
French Republican calendar but instead of rural day names it's genomics day names and today is recursive splicing
Excerpt from Fig. 2a of Sibley et al. 2016's "Lessons from non-canonical splicing" that illustrates the signature "sawtooth" pattern of RNA-seq read coverage in recursively spliced introns.
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David Bass @davidb256.bsky.social · 23/01/2025
holding strong opinions about movies that I haven't seen has never been so exhilarating
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David Bass @davidb256.bsky.social · 08/01/2025
i love these little guys
A complicated, multi-colored, rectangular visualization of eras of geologic time from the Wikipedia page for the Precambrian. The vertical axis shows time in millions of years ago, and the horizontal axis shows increasing precision of terms in the hierarchy of geologic eras, epochs, eons, whatever, etc.
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David Bass @davidb256.bsky.social · 02/01/2025
may your 2025 return-to-office begin with an error-free `snakemake -n`
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David Bass @davidb256.bsky.social · 17/12/2024
am I a data science influencer if I complain about how .loc[] in Pandas is end-inclusive
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