Phot2 plays a key role in the avoidance response, and that both phot1 and phot2 contribute to the accumulation response.

TLS Online TPP Program

#Id: 9418

#XL - T Zoology

Selection favors mating displays that maximize a male’s lifetime fitness.

TLS Online TPP Program

#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.

TLS Online TPP Program

#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.

TLS Online TPP Program

#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. 

TLS Online TPP Program

#Id: 9422

#XL - T Zoology

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

TLS Online TPP Program

#Id: 9423

#XL - T Zoology

Sexual dimorphism in primates