Loren Cassin Sackett's Avatar

Loren Cassin Sackett

@cassinsackett

Evolutionary biologist meets conservation geneticist meets aspiring bioinformatician. Lover of bicycles and mountains. #Fulbright๐Ÿ‡จ๐Ÿ‡ด alum | #NatGeoExplorer Lab website: www.cassinsackett.com

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02.12.2024
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Latest posts by Loren Cassin Sackett @cassinsackett

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Phenotypic plasticity is broadly adaptive across an elevation gradient in the Cutleaf Monkeyflower Phenotypic plasticity is a key mechanism by which organisms can cope with environmental heterogeneity, but its evolutionary consequences depend on how plastic responses align with the broader adaptive...

Preprint up now! With @ferrisifolius.bsky.social, we found positive selection on leaf shape plasticity across the altitudinal range of the cutleaf monkeyflower. This experiment was a HUGE personal undertaking. If you give it a read, Iโ€™d love to hear your thoughts!

www.biorxiv.org/content/10.6...

22.12.2025 14:59 ๐Ÿ‘ 21 ๐Ÿ” 14 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1

Bay Area Popgen. FREE awesome popgen conference. Registration and application for talks now live on our website!

19.02.2026 23:04 ๐Ÿ‘ 19 ๐Ÿ” 17 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Picture via a CNN reporter of a banner with Trumpโ€™s face going up on outside of DOJ building

Picture via a CNN reporter of a banner with Trumpโ€™s face going up on outside of DOJ building

Biden wouldโ€™ve been instantly impeached in a bipartisan vote if he put his face on the freakinโ€™ Department of Justice building

19.02.2026 18:28 ๐Ÿ‘ 14585 ๐Ÿ” 4280 ๐Ÿ’ฌ 1636 ๐Ÿ“Œ 1022

What we are doing to these children is criminal. ๐Ÿ’”

15.02.2026 04:52 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1

Les esperamos este jueves a las 5:00pm. #COLEVOL

10.02.2026 14:44 ๐Ÿ‘ 1 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

1/ ProPublica collected handwritten letters in mid-January from children held at the Dilley Immigration Processing Center, the same facility where 5-year-old Liam Conejo Ramos was taken.

Hundreds of kids are still detained.

Weโ€™ll let the childrenโ€™s words speak for themselves. ๐Ÿงต

09.02.2026 12:25 ๐Ÿ‘ 11565 ๐Ÿ” 7422 ๐Ÿ’ฌ 197 ๐Ÿ“Œ 827
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Subtle Pride & Ally Apparel | Equalitees Inclusive apparel for LGBTQIA+ allies and community members. Subtle pride shirts, stickers, and gifts โ€” designed for comfort, meaning, and equality.

equalitees.me

Are you passionate about democracy? WEAR IT!

29.01.2026 19:23 ๐Ÿ‘ 2 ๐Ÿ” 3 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

And where Texas and Florida go, so too will Oklahoma and the rest.
I was on an H1B at the university of Oklahoma.
The thing that gets me is the relative silence of the Democrats on this. Its not on any kind of list of policy priorities either, for them, to redress the damage being done to higher ed

27.01.2026 22:35 ๐Ÿ‘ 44 ๐Ÿ” 21 ๐Ÿ’ฌ 6 ๐Ÿ“Œ 1

Keep applying pressure.

28.01.2026 01:24 ๐Ÿ‘ 1120 ๐Ÿ” 268 ๐Ÿ’ฌ 13 ๐Ÿ“Œ 3
Following the killing of AFGE Member Alex Pretti and the subsequent slanderous rhetoric that followed from top Trump administration officials, AFGE National President Everett Kelley issued the following statement:

โ€œYesterday, AFGE brought together labor and faith leaders from Minneapolis and across the nation to mourn our fallen brother from Local 3669, Alex Pretti. We honored his life and legacy and lifted up his family, his friends, his union, Minneapolis, and our nation in prayer.

โ€œToday, we demand accountability.

โ€œIn the immediate aftermath of Alexโ€™s killing, DHS Secretary Kristi Noem betrayed the public trust by slandering the good name of our union brother and calling him a โ€œdomestic terrorist.โ€ Alex Pretti was a patriotic ICU nurse at a VA hospital who devoted his life to serving Americaโ€™s veterans. That claim was reckless, defamatory, and unsupported by the facts. Noem was preceded in this false statement by Stephen Miller, Deputy White House Chief of Staff, who is also the architect of the chaotic and failed immigration policy in Minnesota.

โ€œOur demand is clear: Department of Homeland Security Secretary Kristi Noem, who was responsible for carrying out the policy that led to Alexโ€™s needless killing, and Deputy White House Chief of Staff Stephen Miller, the architect of that policy, must resign immediately. If they refuse, President Trump must dismiss them.

Following the killing of AFGE Member Alex Pretti and the subsequent slanderous rhetoric that followed from top Trump administration officials, AFGE National President Everett Kelley issued the following statement: โ€œYesterday, AFGE brought together labor and faith leaders from Minneapolis and across the nation to mourn our fallen brother from Local 3669, Alex Pretti. We honored his life and legacy and lifted up his family, his friends, his union, Minneapolis, and our nation in prayer. โ€œToday, we demand accountability. โ€œIn the immediate aftermath of Alexโ€™s killing, DHS Secretary Kristi Noem betrayed the public trust by slandering the good name of our union brother and calling him a โ€œdomestic terrorist.โ€ Alex Pretti was a patriotic ICU nurse at a VA hospital who devoted his life to serving Americaโ€™s veterans. That claim was reckless, defamatory, and unsupported by the facts. Noem was preceded in this false statement by Stephen Miller, Deputy White House Chief of Staff, who is also the architect of the chaotic and failed immigration policy in Minnesota. โ€œOur demand is clear: Department of Homeland Security Secretary Kristi Noem, who was responsible for carrying out the policy that led to Alexโ€™s needless killing, and Deputy White House Chief of Staff Stephen Miller, the architect of that policy, must resign immediately. If they refuse, President Trump must dismiss them.

The American Federation of Government Employees, which represents border patrol officers at the National Border Patrol Council, calls on Kristi Noem and Stephen Miller to resign or be fired

27.01.2026 02:07 ๐Ÿ‘ 12559 ๐Ÿ” 4174 ๐Ÿ’ฌ 143 ๐Ÿ“Œ 334
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US set to quit World Health Organization The U.S. is due to officially exit the World Health Organization on Thursday, in the face of warnings it will hit both U.S. health and global health and also in violation of a U.S. law that requires W...

Youโ€™ve got to be kidding me

22.01.2026 15:08 ๐Ÿ‘ 5 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 2
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PanForest: predicting genes in genomes using random forests AbstractMotivation. The presence or absence of some genes in a genome can influence whether other genes are likely to be present or absent. Understanding t

Interested in pangenomics ? This paper just out from Alan Beavan (not on socials), @blackpassiflora.bsky.social and @jomcinerney.bsky.social is a must: doi.org/10.1093/bioi...

15.01.2026 12:27 ๐Ÿ‘ 12 ๐Ÿ” 5 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

"Fourth graders spent the week building walls of snow at recess to protect their classmates from ICE."

15.01.2026 14:15 ๐Ÿ‘ 880 ๐Ÿ” 319 ๐Ÿ’ฌ 7 ๐Ÿ“Œ 12

We are collecting information on terminated SAMHSA grants at Grant Witness: grant-witness.us/submit-samhs...

If you worked on one of these programs, please let us know at the link! And please share with your colleagues. We need a comprehensive record of these terminations to fight back!

14.01.2026 17:43 ๐Ÿ‘ 174 ๐Ÿ” 178 ๐Ÿ’ฌ 14 ๐Ÿ“Œ 22
A graph showing daily temperature anomalies since the 1940s

A graph showing daily temperature anomalies since the 1940s

Not a single day in 2025 was cooler than the 1991-2020 average, on a global scale. @copernicusecmwf.bsky.social

14.01.2026 21:27 ๐Ÿ‘ 391 ๐Ÿ” 311 ๐Ÿ’ฌ 5 ๐Ÿ“Œ 23
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A riddle wrapped in an enigma: parasitic lice as clues to the evolutionary puzzle of Sapayoa (Aves) royalsocietypublishing.org/rsbl/article... | #BiologyLetters #Evolution #MolecularBiology #Taxonomy

11.01.2026 11:00 ๐Ÿ‘ 23 ๐Ÿ” 14 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Trump Administration Freezes Food Stamps in Minnesota

Once again, Trump is using hunger as a political weapon. In other contexts this would be called a war crime. In this context, you can just call it evil as all fuck.

www.nytimes.com/2026/01/09/u...

10.01.2026 21:05 ๐Ÿ‘ 458 ๐Ÿ” 190 ๐Ÿ’ฌ 11 ๐Ÿ“Œ 13

Background checks donโ€™t happen until after people start work? For the Department of Homeland Security?

11.01.2026 02:23 ๐Ÿ‘ 1041 ๐Ÿ” 360 ๐Ÿ’ฌ 36 ๐Ÿ“Œ 16
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Absolutely thrilled to share the latest work from my lab focused on the variation and evolution of human centromeres among global populations! We assembled 2,110 human centromeres, identifying 226 new major haplotypes and 1,870 ฮฑ-satellite HOR variants. www.biorxiv.org/content/10.6...

16.12.2025 16:05 ๐Ÿ‘ 108 ๐Ÿ” 46 ๐Ÿ’ฌ 4 ๐Ÿ“Œ 2
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Looking for the truth about what it was like inside CECOT?

Earlier this year, we spoke to the men the Trump administration deported to El Salvador. Hear about what they endured, in their own words: https://www.youtube.com/watch?v=W8INs141xeQ

23.12.2025 02:31 ๐Ÿ‘ 1635 ๐Ÿ” 763 ๐Ÿ’ฌ 24 ๐Ÿ“Œ 30
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Trump Officials Celebrated With Cake After Slashing Aid. Then People Died of Cholera. Behind closed doors in Washington, top advisers made a series of decisions that had devastating repercussions for the poorest country on earth. We went to South Sudan and found people who died as a re...

By the time Tor Topโ€™s mother was sick with cholera, the nearby clinic had been shuttered for two weeks.

He bundled her into a rented canoe and paddled toward the nearest hospital, eight hours away.

Less than halfway into the journey, his mother died.

22.12.2025 02:30 ๐Ÿ‘ 587 ๐Ÿ” 291 ๐Ÿ’ฌ 22 ๐Ÿ“Œ 17
Surviving CECOT (full documentary) | Deported to a Maximum-Security Prison | FRONTLINE + ProPublica
Surviving CECOT (full documentary) | Deported to a Maximum-Security Prison | FRONTLINE + ProPublica YouTube video by FRONTLINE PBS | Official

Now seems like a swell time to point out that Frontline just released this excellent 11-minute mini-documentary about what happened inside CECOT.

21.12.2025 22:26 ๐Ÿ‘ 12951 ๐Ÿ” 7030 ๐Ÿ’ฌ 99 ๐Ÿ“Œ 241

The Onion is within a hair's breadth of reporting real news apnews.com/video/robert...

27.02.2025 21:19 ๐Ÿ‘ 4134 ๐Ÿ” 1168 ๐Ÿ’ฌ 59 ๐Ÿ“Œ 28

This is lunacy. I am more and more sad for America every day.

20.12.2025 03:06 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Rafael Veraza, 25, said he pulled into Samโ€™s Club with his wife and baby on a weekend grocery run on Nov. 8 when he saw a commotion surrounding what looked to be unmarked vehicles full of immigration officers in Cicero, west of Chicago.
The family decided to leave the area without shopping, he said. On his way out, he believes a passing agent mistook him for one of the protesters who have followed immigration officials throughout Chicagoland in an effort to warn residents and document their operations.
Verazaโ€™s wife happened to be filming the parking lot scene on her smartphone because they wanted to one day show their 1-year-old the turbulent times she was born in. She aimed her camera at a passing SUV and captured the moment when an officer filled the familyโ€™s vehicle with a mist of pepper spray.

Rafael Veraza, 25, said he pulled into Samโ€™s Club with his wife and baby on a weekend grocery run on Nov. 8 when he saw a commotion surrounding what looked to be unmarked vehicles full of immigration officers in Cicero, west of Chicago. The family decided to leave the area without shopping, he said. On his way out, he believes a passing agent mistook him for one of the protesters who have followed immigration officials throughout Chicagoland in an effort to warn residents and document their operations. Verazaโ€™s wife happened to be filming the parking lot scene on her smartphone because they wanted to one day show their 1-year-old the turbulent times she was born in. She aimed her camera at a passing SUV and captured the moment when an officer filled the familyโ€™s vehicle with a mist of pepper spray.

Video shows the moment Rafael Veraza says federal agents shot pepper-spray into his car, where he was with his wife and 1-year-old daughter. (Video: Zoeann Murphy/The Washington Post)
Veraza and his wife poured water on their crying babyโ€™s face and rushed to the hospital. A doctor called in a poison control specialist for an expert opinion because theyโ€™d never seen such a young person pepper sprayed, Veraza said. They advised bringing the child to a specialist for follow-up visits to gauge potential long term damage to the childโ€™s lungs and eyes.
McLaughlin denied that federal agents pepper-sprayed anyone outside of Samโ€™s Club in a statement issued after the incident to the news media. She did not offer an explanation for what is shown in the video.

Video shows the moment Rafael Veraza says federal agents shot pepper-spray into his car, where he was with his wife and 1-year-old daughter. (Video: Zoeann Murphy/The Washington Post) Veraza and his wife poured water on their crying babyโ€™s face and rushed to the hospital. A doctor called in a poison control specialist for an expert opinion because theyโ€™d never seen such a young person pepper sprayed, Veraza said. They advised bringing the child to a specialist for follow-up visits to gauge potential long term damage to the childโ€™s lungs and eyes. McLaughlin denied that federal agents pepper-sprayed anyone outside of Samโ€™s Club in a statement issued after the incident to the news media. She did not offer an explanation for what is shown in the video.

ICE sprayed a one-year-old in the face with pepper spray.

The child and parents are US citizens, but that doesn't even matter.

These monsters pepper-sprayed a baby.

We cannot allow ICE to continue this behavior, and they aren't going to reform themselves.

www.washingtonpost.com/immigration/...

15.12.2025 03:24 ๐Ÿ‘ 2169 ๐Ÿ” 864 ๐Ÿ’ฌ 34 ๐Ÿ“Œ 51
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Federal agents use chemical irritant on crowd in Somali neighborhood of Minneapolis amid Trump crackdown Federal agents have used chemical irritant to disperse a crowd in a heavily Somali neighborhood in Minneapolis. This happened Tuesday during a identification checks amid the Trump administration's cra...

Armed ICE agents trapped US citizens in a restaurant and demanded their papers. Federal agents walked into East African restaurants in Cedar-Riverside, MN. They closed and blocked the doors. Then they demanded to see everyoneโ€™s papers. Every person present was a US citizen.

14.12.2025 17:54 ๐Ÿ‘ 5144 ๐Ÿ” 2967 ๐Ÿ’ฌ 322 ๐Ÿ“Œ 555
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Infrared radiation may be one of the most ancient plant signals to pollinating insects Harvard researchers have discovered that cycadsโ€”one of the oldest living lineages of seed plantsโ€”heat up their reproductive organs to attract beetle pollinators and the insects possess infrared sensor...

Before flowers evolved with attractive colors and scents, what did plants use to attract insect pollinators? Heat may be one ancient strategy.

Valencia-Montoya and colleagues report their study of cycads in Science. Journal link in first comment.

๐Ÿงช๐ŸŒ๐ŸŒฑ๐Ÿ

phys.org/news/2025-12...

#pollinators

14.12.2025 19:35 ๐Ÿ‘ 75 ๐Ÿ” 23 ๐Ÿ’ฌ 5 ๐Ÿ“Œ 2
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A colorful legacy of hybridization in wood-warblers includes frequent sharing of carotenoid genes among species and genera Introgression between species can shape evolutionary trajectories in important ways. This study of the entire family of the colorful wood-warblers (Parulidae) uses whole-genome sequencing to reveal fr...

New paper out. If you like colorful birds, hybridization, and phylogenetics, read on! ๐Ÿงตhttps://doi.org/10.1371/journal.pbio.3003501

12.12.2025 15:53 ๐Ÿ‘ 98 ๐Ÿ” 44 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 6
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I have a new preprint demonstrating a genome-architecture-aware approach to inferring species trees and introgression landscapes from a small number of genomes. If you are interested in phylogenomics, birds, or hybridization, this is for you! www.biorxiv.org/content/10.1...

01.12.2025 19:35 ๐Ÿ‘ 82 ๐Ÿ” 41 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1

Prohibited activities include advising Chinese graduate students. For reference, a recent Georgetown report estimated 16% of STEM graduate students in the US are Chinese nationals.

This would take out entire fields at the knees, which is perhaps the point.

14.11.2025 02:52 ๐Ÿ‘ 767 ๐Ÿ” 406 ๐Ÿ’ฌ 23 ๐Ÿ“Œ 15