The National Geographic Magazine, Volume 204National Geographic Society., 2003 - Geography |
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Page 39
... male ( or males ) with which they want to mate . The males , in turn , compete with each other to get a female's attention , each vying to show her that he will be the best sperm donor for her babies . That is why , evolutionary ...
... male ( or males ) with which they want to mate . The males , in turn , compete with each other to get a female's attention , each vying to show her that he will be the best sperm donor for her babies . That is why , evolutionary ...
Page 40
... males for mates , and via females ' deci- sions to mate with particular males . Darwin's fellow evolutionists readily accepted the part of the sexual selection . theory suggesting that male competi- tion plays a role in evolution . Many ...
... males for mates , and via females ' deci- sions to mate with particular males . Darwin's fellow evolutionists readily accepted the part of the sexual selection . theory suggesting that male competi- tion plays a role in evolution . Many ...
Page 45
... male's size . " Bigger males make deeper chucks , " he says . " Females prefer the males with the deepest chucks . " Deepest chuck , biggest male , most sperm : By choosing him , a female has the best chance that all of her eggs will be ...
... male's size . " Bigger males make deeper chucks , " he says . " Females prefer the males with the deepest chucks . " Deepest chuck , biggest male , most sperm : By choosing him , a female has the best chance that all of her eggs will be ...
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