Competitors – Competitors are adapted to live in highly competitive

Many tree species, large vertebrate carnivores and herbivores in forests or grasslands.

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#Id: 9419

#XL - T Zoology

Intersexual selection - Members of one sex, usually females, choose mates based on attractive characteristics such as color of plumage or sound of courtship song.

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#Id: 9420

#XL - T Zoology

Runaway selection: Females choose mates without the offering of obvious material benefits or parenting skills, and instead make their choices based on plumage color or courtship peahen may choose her peacock with long tail feather.

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#Id: 9421

#XL - T Zoology

Handicap principle: Long tail feathers function as a sign of an individual’s genetic quality because the bearer must be able to afford this energetically costly trait. 

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#Id: 9422

#XL - T Zoology

Intrasexual selection - Members of one sex, usually males, compete over partners, and the winner performs most of the mating.

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#Id: 9423

#XL - T Zoology

Sexual dimorphism in primates

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#Id: 9424

#XL - T Zoology

Parental investment - Parental investment refers to the contributions each sex makes in producing and rearing offspring.