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kztwyman.bsky.social
Kalyani Twyman
@kztwyman.bsky.social
260 followers 240 following 20 posts
PhD student at the University of St Andrews with Prof. Andy Gardner Evolution, theory, social behaviour, antiracism, trail running, climbing She/her
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kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · Jun 26
Now all typeset and pretty! A little summary:
kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · May 8
Very excited to share that our paper, ‘The clonality window: relatedness and the group covariance effect in the evolution of division of labour’, is out now in @journal-evo.bsky.social advances. With @andygardner.bsky.social

doi.org/10.1093/evol...

#OpenAccess #Evolution #Multicellularity
The clonality window: relatedness and the group covariance effect in the evolution of division of labour
Abstract. Cellular division of labour is closely associated with the emergence of organismality in the evolution of obligate multicellularity. Michod has s
doi.org
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kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · Sep 4
This is pretty cool
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kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · Sep 2
Why does the idea that race is biological persist despite biology so clearly refuting it? Check out a blog @kevinlala.bsky.social and I wrote about our new article titled 'Impediments to countering racist pseudoscience' (coauthored w/ @gillianrbrown1.bsky.social and Marc Feldman) for some thoughts:
Race Isn’t Biological — So Why Do So Many Still Think It Is? « Life Sciences# « Cambridge Core Blog
Even though findings from genetics and other sciences unequivocally refute biological conceptions of race, this erroneous viewpoint remains widespread among the general public. Why can’t scientists co...
www.cambridge.org
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Reposted by Kalyani Twyman
kevinlala.bsky.social
Kevin Lala @kevinlala.bsky.social · Sep 2
Here is the link to a short blog that @kztwyman.bsky.social and I wrote about our article (with @gillianrbrown1.bsky.social and Marc Feldman) entitled "Impediments to countering racist pseudoscience":

www.cambridge.org/core/blog/20...
Race Isn’t Biological — So Why Do So Many Still Think It Is? « Life Sciences# « Cambridge Core Blog
Even though findings from genetics and other sciences unequivocally refute biological conceptions of race, this erroneous viewpoint remains widespread among the general public. Why can’t scientists co...
www.cambridge.org
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Reposted by Kalyani Twyman
rebeccasear.bsky.social
Rebecca Sear @rebeccasear.bsky.social · Aug 31
Race Isn’t Biological — So Why Do So Many Still Think It Is?

@kevinlala.bsky.social and @kztwyman.bsky.social blog about their recent paper in the journal Evolutionary Human Sciences

www.cambridge.org/core/blog/20...
Image from the blog showing 5 solutions to countering scientific racism 1. Introduce students to the complexities of developmental processes 2. Introduce students to the complexities of inheritance processes 3. Explain that variation between racialised groups in behavioural and cultural traits is not caused by genetic differences 4. Debunk scientific racism in school and university level science curricula 5. Acknowledge and contextualised the racist histories of academic fields
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Reposted by Kalyani Twyman
kevinlala.bsky.social
Kevin Lala @kevinlala.bsky.social · Aug 27
Our article "Impediments to countering racist pseudoscience" (with @gillianrbrown1.bsky.social, @kztwyman.bsky.social & Marc Feldman) is now published online.

We describe five factors that contribute to the spread of racism and suggest strategies for countering them.

doi.org/10.1017/ehs....
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Reposted by Kalyani Twyman
andygardner.bsky.social
Andy Gardner @andygardner.bsky.social · Aug 18
And Chedhawat Chokechaipaisarn, whose poster "The consequences of constrained sex allocation under local mate competition" (P02.036) is in Tuesday's session.

This is based on his recent paper in Journal of Evolutionary Biology:

doi.org/10.1093/jeb/...

@jevbio.bsky.social @eseb2025.bsky.social
Photo of Chedhawat Chokechaipaisarn
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Reposted by Kalyani Twyman
andygardner.bsky.social
Andy Gardner @andygardner.bsky.social · Aug 18
Two other members of the research group have successfully made it to @eseb2025.bsky.social ahead of me.

Look out for @kztwyman.bsky.social, whose poster "A formal theory of group-level adaptation for obligate eusociality" (P01.068) is in this evening's session.
Photo of Kalyani Twyman.
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kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · Aug 1
Really great to hear that these topics are being brought up and spoken about in class. Would love to hear their (and your) thoughts!
Reposted by Kalyani Twyman
alecburslem.bsky.social
Alec Burslem @alecburslem.bsky.social · Jul 28
It's official! I'm now the newest postgraduate research fellow at the marine mammal research program at the University of Hawaii at Mānoa. Bio and blog post with more details here:
www.mmrphawaii.org/alec-burslem
www.mmrphawaii.org/post/shippin...
Shippin' out from Scotland
Written by MMRP PostDoc Alec BurslemFor a while it looked like I was going to be a chef. It was 2009, and after a couple of disappointing A-level results in biology and chemistry had shaken my confide...
www.mmrphawaii.org
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kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · Jul 28
Really happy to share this article I'm grateful to have been a part of: 'Impediments to countering racist pseudoscience' coauthored with @kevinlala.bsky.social, @gillianrbrown1.bsky.social and Marcus Feldman. Check out a preprint here: www.cambridge.org/core/journal...
#ScientificRacism #Antiracism
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Reposted by Kalyani Twyman
gillianrbrown1.bsky.social
Prof. Gillian Brown @gillianrbrown1.bsky.social · Jul 25
In this new article on scientific racism (coauthored with @kevinlala.bsky.social, @kztwyman.bsky.social and Marcus Feldman), we present five impediments to countering racist pseudoscience and suggest strategies for containing its spread.

#ehbea #philsci #histsci #ishpssb2025 🧪

tinyurl.com/4ptyt6w2
Impediments to countering racist pseudoscience | Evolutionary Human Sciences | Cambridge Core
Impediments to countering racist pseudoscience
tinyurl.com
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Reposted by Kalyani Twyman
kevinlala.bsky.social
Kevin Lala @kevinlala.bsky.social · Jul 25
I'm happy to share our latest manuscript "Impediments to countering racist pseudoscience", coauthored with @gillianrbrown1.bsky.social @kztwyman.bsky.social & Marcus Feldman.
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Reposted by Kalyani Twyman
drsarahmyers.bsky.social
Dr Sarah Myers @drsarahmyers.bsky.social · Jul 24
Excited to see 1st of the Evoluionary Human Sciences special issue on scientific racism come out! @kevinlala.bsky.social @gillianrbrown1.bsky.social @kztwyman.bsky.social & Marcus Feldman discuss impediments to countering racist pseudoscience & present 5 solutions www.cambridge.org/core/journal...
Impediments to countering racist pseudoscience | Evolutionary Human Sciences | Cambridge Core
Impediments to countering racist pseudoscience
www.cambridge.org
8 27
Reposted by Kalyani Twyman
andygardner.bsky.social
Andy Gardner @andygardner.bsky.social · Jul 9
New paper: "The consequences of constrained sex allocation in diploids and haplodiploids under local mate competition", with Chedhawat Chokechaipaisarn:

doi.org/10.1093/jeb/...

@jevbio.bsky.social
Figure 1. Unbeatable sex allocation strategy of unconstrained females (r*) as a function of proportion of constrained females (p) under local mate competition with two foundresses colonising the patch. Shown are the result for Godfray’s (1990) erroneous diploidy solution (dashed grey line), our corrected diploidy solution (solid grey line), and our haplodiploidy solution (solid black line). Overlaid are results from individual-based simulations (discs).
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kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · Jun 26
Thank you to all who provided helpful discussion or suggestions: @alecburslem.bsky.social, Chedhawat Chokechaipaisarn, @bingdongevo.bsky.social, Steve Frank, @georgeshillcock.bsky.social, @zerenvc.bsky.social, & two anonymous reviewers. And of course, thanks to my supervisor @andygardner.bsky.social
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kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · Jun 26
Lastly, we find that sharing is required for division of labor to be favoured by natural selection, meaning that the “clonality window” for sharing is also a prerequisite for division of labor in this scenario, aligning with empirical evidence on the evolution of obligate multicellularity!
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kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · Jun 26
We also show that the covariance effect imparts an inclusive-fitness benefit for cells that share, but that natural selection favours sharing only when group-mates are clonal, yielding what we call a “clonality window” for evolution of viability sharing in this context.
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kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · Jun 26
We recover the group covariance effect, revealing that it is a consequence of cells sharing the products of their labours (e.g., as a public good). In doing so, we also clarify that the group’s fitness remains equal to the aggregate of the fitnesses of its constituent cells - yay!
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kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · Jun 26
However, it is difficult to see how a group’s fitness could be different from the aggregate of its constituents, so in the paper, we investigate the same fitness trade-off and its potential consequences for division of labor.
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kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · Jun 26
It has been suggested that a trade-off between viability and fecundity may lead to a group’s fitness being augmented above the average of its constituents’ fitnesses via a ‘group covariance effect’, offering a first step toward division of labor and obligate multicellularity.
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kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · Jun 26
Cellular division of labor—e.g., germ-soma specialisation—is closely associated with the emergence of organismality in the evolution of obligate multicellularity, an important major transition in evolution.
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kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · Jun 26
Now all typeset and pretty! A little summary:
kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · May 8
Very excited to share that our paper, ‘The clonality window: relatedness and the group covariance effect in the evolution of division of labour’, is out now in @journal-evo.bsky.social advances. With @andygardner.bsky.social

doi.org/10.1093/evol...

#OpenAccess #Evolution #Multicellularity
The clonality window: relatedness and the group covariance effect in the evolution of division of labour
Abstract. Cellular division of labour is closely associated with the emergence of organismality in the evolution of obligate multicellularity. Michod has s
doi.org
1 5 11
kztwyman.bsky.social
Kalyani Twyman @kztwyman.bsky.social · May 8
Very excited to share that our paper, ‘The clonality window: relatedness and the group covariance effect in the evolution of division of labour’, is out now in @journal-evo.bsky.social advances. With @andygardner.bsky.social

doi.org/10.1093/evol...

#OpenAccess #Evolution #Multicellularity
The clonality window: relatedness and the group covariance effect in the evolution of division of labour
Abstract. Cellular division of labour is closely associated with the emergence of organismality in the evolution of obligate multicellularity. Michod has s
doi.org
4 14
Reposted by Kalyani Twyman
andygardner.bsky.social
Andy Gardner @andygardner.bsky.social · May 7
New paper: “The clonality window: relatedness and the group covariance effect in the evolution of division of labour”, with @kztwyman.bsky.social #OpenAccess

doi.org/10.1093/evol...

@journal-evo.bsky.social #Image: #ChatGPT #Evolution #OA
AI-generated image using the paper's title and abstract as input.
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Reposted by Kalyani Twyman
adamrutherford.bsky.social
Adam Rutherford @adamrutherford.bsky.social · Apr 22
Race is a social construct. But what does that mean, and why do we say this? An explainer, in the wake of Trump being racist and wrong (pt 675)

www.bbc.com/future/artic...
'Biological reality': What genetics has taught us about race
As US President Donald Trump takes aim at the Smithsonian Institution for "anti-American ideology", Adam Rutherford examines what the science of genetics has taught us about race.
www.bbc.com
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