Population genetics, applies the principles of transmission genetics to large groups of individuals. 

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#XL - T Zoology

Many eyes hypothesis‐ By living in groups, individuals may decrease the amount of time each spends scanning for predators and increase the time they have to feed. 

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#XL - T Zoology

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#XL - T Zoology

Sexual selection is selection that promotes traits that will increase an organism’s mating success.

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#XL - T Zoology

Sexual dimorphism can evolve when selection favors the expression of a trait to be different in males and females. 

This situation is called sexually antagonistic selection, because an increase in the trait’s expression benefits one sex but harms the other.

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#XL - T Zoology

An individual without gonads will leave no genes to the next generation. Gonads and genitalia are called primary sexual traits.

Secondary sexual traits, which differ between the sexes but do not play a direct role in reproduction.

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#Id: 9414

#XL - T Zoology