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ontogeny

Branching_archaeocyath
Photo credit: Killamator, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons.

Fossil Friday: Update on Cambrian Bryozoans

The authors emphasize that “the origin of the bryozoans remains a mystery” but explicitly confirm the reality of the Cambrian Explosion. Read More ›
dino-feather
Photo: Dinosaur feather in Burmese amber, coll. SMNS, photo G. Bechly.

Fossil Friday: A Dinosaur Feather and an Overhyped New Study on the Origin of Feathers

Feathers, which are the most complex integumental structures known in the animal kingdom, without doubt required coordinated changes in numerous genes. Read More ›
lab mouse
Photo credit: Rama, CC BY-SA 2.0 FR <https://creativecommons.org/licenses/by-sa/2.0/fr/deed.en>, via Wikimedia Commons.

More Jobs for “Junk” DNA

It turns out the mouse endogenous retrovirus L (MERVL) is essential for embryogenesis, according to a recently published article. Read More ›
embryo of pallid sturgeon
Photo: embryo of pallid sturgeon, by USFWS Mountain-Prairie via Flickr (cropped).

“Evidence for Evolution”? Khan Academy Pushes Haeckel’s Phony Embryo Drawings

I’ve watched many Khan Academy videos over the years — sometimes just for fun, and sometimes to advise teachers on whether they are good tools to use. Read More ›
Haeckel's Embryos
Image: Haeckel's Embryos, via Wikimedia Commons.

So, Does Ontogeny Recapitulate Phylogeny? Nope

When I was younger, my family lived next-door to a retired dentist named Max. Before entering dentistry, Max studied biology at UC Berkeley. Read More ›
Casey Luskin
Photo: Casey Luskin in South Africa.

Casey Luskin Is a Hit on Coast to Coast

A lady from Spokane advanced her view that God originated by hatching from a dinosaur egg. Read More ›
Zebrafish embryo

Out of One Cell, Many Tissues — But How?

Scientists are delving into the remarkable way a zygote grows through its embryonic stages to an adult. Read More ›

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