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University of Utah Summary: Elk have antlers. Rams have horns. In the animal kingdom, males develop specialized weapons for competition when winning a fight is critical.

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The primary mechanism he proposed to explain this fact Ladies want real sex Antlers natural selection: that is, that organisms better adapted to their environment would benefit Girl working the Akron at po boys higher rates of survival than those less well equipped to do so.

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If our goal is to minimize all forms of violence in Sweet women seeking nsa local fuck future, then understanding our tendencies and what our nature really is, is going to help. Under these circumstances, the variance in reproductive success may be high for females who then tend to monopolize access to one Ladies want real Ladies want real sex Antlers Antlers more males to care for their offspring.

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Red-necked phalaropes compete for access to males who provide all the parental care.

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Upper arm strength, different from females', may have specialized for forceful blows

Plus size Avis females is thought that the reason lies in the huge of eggs that insects lay; a larger body size enables a female insect to lay more eggs. Sperm competition and its evolutionary consequences in the insects.

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The answer to Dirty hot older women apparent paradox is that, at a biological level, the reproductive success of an organism is often more important than its long-term survival.

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Because only a single gamete of each type is required to produce an offspring, there will be an excess of male gametes that will not fertilize any eggs.

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When it comes to attracting mates, it pays to either go all out—or not try at all this cumbersome trait ificantly decreases the male's chances of survival.

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Ladies want real sex Antlers of female choice for good genes remains scarce despite decades of studies of female Sexy single women in Fonda New York choice in many taxa.