A clathrin molecule,

called a triskelion, is composed of : 

Three heavy chains

Three light chains

TLS Online TPP Program

#Id: 4702

#Unit 11. Evolution and Behavior

Females are more related to their sisters (0.75) than they would be to their own offspring (0.50).

TLS Online TPP Program

#Id: 4703

#Unit 11. Evolution and Behavior

TLS Online TPP Program

#Id: 4704

#Unit 11. Evolution and Behavior

In haplodiploid organisms, males are haploid, and females are diploid. Consider the relatedness diagram shown below. Female A has a full-sister, Y, who has a daughter, B. The relatedness between A and B is ___________. 

TLS Online TPP Program

#Id: 4705

#Unit 11. Evolution and Behavior

Reciprocal altruism

Cases of altruism are known to exist between unrelated individuals. What drives this phenomenon is a “You scratch my back, I’ll scratch yours” behavior called reciprocal altruism.

TLS Online TPP Program

#Id: 4706

#Unit 11. Evolution and Behavior

A female vampire bat will regurgitate food to an unrelated female if needed, because at other times she may be the recipient of such a meal.

TLS Online TPP Program

#Id: 9375

#Unit 11. Evolution and Behavior

Behavior is the observable response of organisms to their stimuli.