Why Are There As Many Males As Females?
Evolution doesn’t pick a side!
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In almost every animal species on Earth, equal numbers of males and females are conceived. Why is that? Especially in populations like lions or elephant seals, where most males don’t get to mate? That’s survival of the laziest, not survival of the fittest. It turns out that in most cases, an equal balance of the sexes is the evolutionary stable strategy. From Charles Darwin to Ronald Fisher to W.D. Hamilton to Richard Dawkins, the question of why there’s as many males as females has fascinated biologists. Today, we’ll explain why that is the way it is.
READ MORE:
Fisher, R. A. “The genetical theory of natural selection”
Dawkins, Richard “The Selfish Gene” http://amzn.to/2omkuFr
Hamilton, W. D. (1967). Extraordinary sex ratios. Science, 156(3774), 477-488.
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It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Director: Joe Nicolosi
Writer: Stephanie Keep
Creative Director: David Schulte
Editor/animator: Karl Boettcher and Derek Borsheim
Producer: Stephanie Noone and Amanda Fox
Produced by PBS Digital Studios
Music via APM
Stock images from Shutterstock http://www.shutterstock.com
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Видео Why Are There As Many Males As Females? канала It's Okay To Be Smart
Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub
↓↓↓ More info and sources below ↓↓↓
In almost every animal species on Earth, equal numbers of males and females are conceived. Why is that? Especially in populations like lions or elephant seals, where most males don’t get to mate? That’s survival of the laziest, not survival of the fittest. It turns out that in most cases, an equal balance of the sexes is the evolutionary stable strategy. From Charles Darwin to Ronald Fisher to W.D. Hamilton to Richard Dawkins, the question of why there’s as many males as females has fascinated biologists. Today, we’ll explain why that is the way it is.
READ MORE:
Fisher, R. A. “The genetical theory of natural selection”
Dawkins, Richard “The Selfish Gene” http://amzn.to/2omkuFr
Hamilton, W. D. (1967). Extraordinary sex ratios. Science, 156(3774), 477-488.
-----------
FOLLOW US:
Merch: https://store.dftba.com/collections/its-okay-to-be-smart
Facebook: http://www.facebook.com/itsokaytobesmart
Twitter:@DrJoeHanson @okaytobesmart
Tumblr: http://www.itsokaytobesmart.com
Instagram: @DrJoeHanson
-----------
It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Director: Joe Nicolosi
Writer: Stephanie Keep
Creative Director: David Schulte
Editor/animator: Karl Boettcher and Derek Borsheim
Producer: Stephanie Noone and Amanda Fox
Produced by PBS Digital Studios
Music via APM
Stock images from Shutterstock http://www.shutterstock.com
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Видео Why Are There As Many Males As Females? канала It's Okay To Be Smart
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