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tag ancient evolution developmental biology

Evolution of the Penis
Kerry Grens | Oct 30, 2015 | 1 min read
A phallus-less reptile goes through a developmental stage with external genitalia, suggesting a common origin for the organ among amniotes.
Aristotelian Biology
Armand Marie Leroi | Sep 1, 2014 | 3 min read
The ancient Greek philosopher was the first scientist.
Walking Fish Model Evolution
Bob Grant | Aug 28, 2014 | 2 min read
Raising a semi-terrestrial species on land highlights the role of developmental plasticity in the evolutionary transition from water to land.
Fossilized Tubes Point to Super-Ancient Mobile Organisms
Jef Akst | Feb 12, 2019 | 1 min read
If the structures identified in a 2.1-billion-year-old rock are really signs of burrowing organisms, it would push back the earliest known mobile organisms by 1.5 billion years.
Microscopy image of the cnidarian <em>Hydractinia symbiolongicarpus&nbsp;</em>with cell nuclei stained blue and oocytes stained yellow
Ancient Immunoglobulin Genes Help Cnidarians Decide to Fight or Fuse
Sophie Fessl, PhD | Oct 11, 2022 | 4 min read
Immunoglobulin genes might have evolved much earlier than previously expected, perhaps even in the common ancestor of Cnidarians and Bilateria, a study suggests.
A Cape ground squirrel sits upright on its hind legs, holding its forelimbs up to its face.
Animals Are Shape-Shifting in Response to a Warming World
Andy Carstens | Jan 3, 2023 | 10 min read
Forced to respond to a climate that’s changing faster than it ever has, it remains unclear whether species’ adaptations can keep pace.
Lasker Awards Target Developmental, Diagnostic Genetics
Rebecca Andrews | Sep 29, 1991 | 6 min read
The Laskers are among the most prestigious medical research awards in the world and among the oldest in the United States. Since they were first presented in 1944, 49 winners have gone on to win Nobel Prizes. Jordan Gutterman of the M.D. Anderson Cancer Center in Houston, executive vice president of the Albert and Mary Lasker Foundation, and director of the awards program since earlier this year, attributes the prestige of the awards to their longevity and to the "extraordinary quality&quo
Revolutionary Repurposing
Neil Shubin | Jun 1, 2020 | 3 min read
Evolution needn’t make improbable leaps to facilitate transitions into uncharted biological territory. Adapting new uses for existing structures works just fine.
A Tale of Two Tails
Joshua A. Krisch | Dec 6, 2016 | 2 min read
An analysis of ancient fish fossils suggests that mammalian and fish tails are fundamentally different structures, each with unique evolutionary histories.
Moving Past the Myth of a Simple Biological Difference Between the Sexes
Cordelia Fine | Jan 1, 2017 | 3 min read
The public may still believe that male-specific traits, such as high testosterone levels, lead to many of the gender inequalities that exist in society, but science tells a different story.

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