#allele — Public Fediverse posts

2/
• The Evolutionary Flow: Traces the progression from genotype through developmental plasticity to the behavioral phenotype. This phenotype is tested by natural selection; successful traits lead to allele frequency shifts in a population.

https://youtu.be/SPWd6CjrJd8

#animals
#ethology
#genotype
#plasticity
#phenotype
#allele
#instinct
#evolution

Now available ahead of print: "Allee Effects, Colonization, and Extinction: The Surprising Benefits of Demographic Stochasticity" by Angela Gong, Emma J. Walker, and Benjamin Gilbert

https://www.journals.uchicago.edu/doi/10.1086/735833

#allele #extinction #colonization #demographic #stochasticity

In a new Synthesis article, Walker & Gilbert provide a necessary framework and guide for empirical research on how allee effects structure ecological diversity. They counter a number of misconceptions about allee effects in modern coexistence theory. https://www.journals.uchicago.edu/doi/10.1086/735419

#allele #alleleEffects #diversity #coexistence

My day job is all about #genes, so I applaud the #genomic revolution in #paleontology and #evolutionary #biology. But #evolution really is more than a shift in #allele frequencies over time. It's also change in the #phenotypes those alleles produce, and their #interaction with the world around them. 🧪🖥🧬🦖

https://www.cambridge.org/core/journals/paleobiology/article/morphological-evolution-in-a-time-of-phenomics/4A7E3BC775855EC40DE03F9EE567D22A

So I'm equally excited about the #quantitative revolution in describing and cataloguing #traits which until recently could only be analyzed #qualitatively. There's a whole new window opening into the history of life.

"Une petite histoire du phénotype et de sa relation avec le génotype"

Bien que les notions de phénotype et de "relation génotype-phénotype" fassent partie du vocabulaire quotidien des biologistes, elles ne sont pas toujours bien comprises et sont parfois mal utilisées.

Dans un article de la revue du CNRS "Histoire de la recherche contemporaine", Dominique de Vienne ( #IDEEV #GQELeMoulon) retrace l’histoire de ces notions. Il rappelle d’abord que la question originelle était celle de la relation entre une variation génotypique et une variation phénotypique.

✅ En savoir plus : https://moulon.inrae.fr/news/2025/02/une-petite-histoire-du-ph%C3%A9notype-et-de-sa-relation-avec-le-g%C3%A9notype/

#phenotype #genotype #génétique #genetics #allele

#UniversitéParisSaclay @inrae_france @cnrs #gqe #dominiquedevienne

Urquhart-Cronish et al. model the eco-evolutionary range dynamics of life-history traits under density-dependent selection. They find that DD alters the extent of allele surfing & that population density is important for consequences of range expansion.
https://www.journals.uchicago.edu/doi/10.1086/728599

#evolution #densityDependent #allele #population #rangeExpansion

Priklopil & Lehmann show how to decompose one-generational allele-frequency change in terms of selection and class transmission, and how reproductive values can be used to reach a decomposition between two distant generations of the evolutionary process.
https://www.journals.uchicago.edu/doi/10.1086/727970

#allele #frequency #selection #classTransmission #reproductive #decomposition #evolution

Here's a link to a free online test for common color deficiencies. Rather common among white XYs, but XX and XXY individuals can have them, too. #color #vision #eye #allele #ColorBlind #ColorBlindness #ColorDeficient #ColourBlind https://www.eyeque.com/color-blind-test/

Definitions 🧵:
A #haplogroup is a combination of #alleles that tend to be inherited together.
An #allele is a variation of the same sequence of nucleotides at the same place on a DNA molecule.

#Haplogroups pertain to a single line of descent. As such, individual membership of a haplogroup relies on a small proportion of the #genetic material possessed by that individual.

Mothers pass on mitochondrial #DNA unmixed to all their children; so the #ancestry can be traced along the maternal line.