Greenbeard altruism is a fascinating concept in evolutionary biology that attempts to explain the evolution of altruistic behavior. It proposes that a single gene (or a set of tightly linked genes) can be responsible for three distinct traits: a noticeable signal or "tag" (like a green beard), recognition of that signal in others, and altruistic behavior directed towards those with the same signal. This allows individuals to selectively cooperate with others who share the same gene, even if they are not related. 1 While the "green beard" example is hypothetical, there are real-world examples of this phenomenon in various organisms, highlighting the potential for cooperation to arise through mechanisms beyond kin selection.
Green beard altruism, while theoretically possible, is rarely observed in nature due to the complex requirements of a single gene controlling the signal, recognition, and altruistic behavior.
by The Counterintuitive Words February 10, 2025
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A rookie or otherwise novice dwarf who is new to mining.
Opposite of a Grey Beard, being a seasoned or experienced miner.
A rookie or otherwise novice dwarf who is new to mining.
Opposite of a Grey Beard, being a seasoned or experienced miner.
by Minecraft Muffin February 18, 2025
Get the Green Beard mug.Danny felt sorry for lying to Lady Bird, but he desperately needed a beard to keep his homophobic parents off his back.
And
A: Isak is all over Sara! Their PDA in the classroom is a bit much. B: Oh, but see the way he looks a Even! Sara is just his beard.
And
A: Isak is all over Sara! Their PDA in the classroom is a bit much. B: Oh, but see the way he looks a Even! Sara is just his beard.
by nurdygurl June 10, 2024
Get the Beard mug.A pretend boy- or girlfriend used (hopefully knowingly) to disguise someone's true sexual orientation.
Danny felt sorry for lying to Lady Bird, but he desperately needed a beard to keep his homophobic parents off his back.
A: Isak is all over Sara! Their PDA in the classroom is a bit much. B: Yeah, but see the way he looks a Even! Sara is just his beard.
A: Isak is all over Sara! Their PDA in the classroom is a bit much. B: Yeah, but see the way he looks a Even! Sara is just his beard.
by nurdygurl June 10, 2024
Get the Beard mug.A vagina that’s out of this world.
by Spacedust June 22, 2024
Get the Bearded Space Clam mug.An adjective to describe something of such low effort and low quality, you call it Tommen's Beard.
This is in reference to the TV show the Acolyte, in which the actor who played King Tommen in Game of Thrones plays a Jedi with a horrible looking, glue-on beard.
This is in reference to the TV show the Acolyte, in which the actor who played King Tommen in Game of Thrones plays a Jedi with a horrible looking, glue-on beard.
"That entire show was Tommen's Beard."
"Zoomer hairstyles are all so Tommen's Beard."
"Those truck mods are Tommen's Beard."
"Zoomer hairstyles are all so Tommen's Beard."
"Those truck mods are Tommen's Beard."
by Murderous Yorkie June 25, 2024
Get the Tommen's Beard mug.Hym "A while back I posited that having a beard would protect your face in hand-to-hand combat. Doug Sharpe made a video about the study. They made an artificial bone and covered it in hair of varying lengths and then built a 'striker' to hit the bone. What they found is that they striker would break the bone 100% of the time without any hair. 95% of the time with 5mm of hair. And 45% of the time with a full beard... So, long story short... CORRECT AGAIN! ULTIMATE SCIENCE-MASTER AND LITERAL CREATOR OF AI! I'm like a chief researcher! Except also better than everyone."
by Hym Iam June 28, 2024
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