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tag chickens developmental biology evolution

Dino Snouts from Chicken Beaks
Bob Grant | May 12, 2015 | 2 min read
Researchers tweak gene expression in chicken embryos that may have been crucial to the evolutionary transition from dinosaur noses to bird bills.
Image of the Day: See You Later!
The Scientist and The Scientist Staff | Jan 8, 2018 | 1 min read
Developmental biologists take a close look at how alligator embryos grow. 
Evolution by Splicing
Ruth Williams | Dec 20, 2012 | 3 min read
Comparing gene transcripts from different species reveals surprising splicing diversity.
Why Many Birds Don’t Have Penises
Kate Yandell | Jun 7, 2013 | 2 min read
In avian species, a gene induces programmed cell death during development in the area where a phallus would otherwise grow.
Behavior Brief
Rina Shaikh-Lesko | Apr 28, 2014 | 4 min read
A round-up of recent discoveries in behavior research
Embryonic Evolution Through Ernst Haeckel’s Eyes
Diana Kwon | May 1, 2017 | 2 min read
The 19th century biologist’s drawings, tainted by scandal, helped bolster, then later dismiss, his biogenetic law.
Close up photo of a wing
Unearthing the Evolutionary Origins of Insect Wings
Jef Akst | Apr 4, 2022 | 6 min read
A handful of new studies moves the needle toward a consensus on the long-disputed question of whether insect wings evolved from legs or from the body wall, but the devil is in the details.
An illustration of green bacteria floating above neutral-colored intestinal villi
The Inside Guide: The Gut Microbiome’s Role in Host Evolution
Catherine Offord | Jul 1, 2021 | 10+ min read
Bacteria that live in the digestive tracts of animals may influence the adaptive trajectories of their hosts.
What Lies Sleeping
Philippe Mourrain | Mar 1, 2016 | 4 min read
Why can science still not define this most basic biological process?
Genetics Models Move Beyond Drosophila and the Humble Lab Mouse
Amber Dance | Sep 1, 2019 | 8 min read
Organisms with unusual genomes are helping scientists investigate gene regulation, evolution, and development.

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