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How the chicken lost its penis

How the chicken lost its penis | Biosciencia News | Scoop.it
Molecules that signal cell death quash nascent rooster genitals.
Biosciencia's insight:

The case of the missing bird penis is a long-standing mystery in evolutionary biology. But the identification of a molecular mechanism that controls penis loss in birds goes some way to solving this conundrum.

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Prehistoric ear bones could lead to evolutionary answers

Prehistoric ear bones could lead to evolutionary answers | Biosciencia News | Scoop.it
The tiniest bones in the human body – the bones of the middle ear – could provide huge clues about our evolution and the development of modern-day humans, according to a study by a team of researchers that include a Texas A&M University...
Biosciencia's insight:

Tiny ear bones (from left) the incus, stapes, and malleus could provide big clues to human evolution.

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