Chimpanzees given food will readily share with other chimpanzees, even if not related. Which of the following is an explanation for this observation?
A. Sexual dimorphism is occurring.
B. They anticipate reciprocal altruism.
C. Dominance hierarchy is occurring.
D. It is a reflex.
E. They are engaging in kin selection.
B. They anticipate reciprocal altruism.
You might also like to view...
If a kelp farmer wanted to maximize her harvest, which type of echinoderm would she be most concerned about in the habitat?
A) sand dollars B) brittle stars C) sea stars D) sea urchins E) sea cucumbers
Male lizards experimentally dosed with supplemental testosterone were more active, displayed more
often, and had a higher rate of death.
Indicate whether the statement is true or false.Dr. Rebecca Lancfield used which of the following in her classification of the Streptococci?
A. The F protein B. The M-like protein C. The M protein D. The haemolytic pattern of the bacteria E. The C-carbohydrate (moiety) antigen in the cell wall
Transpiration results from
a. the polar nature of water molecules. b. the drying power of air. c. cohesion-tension forces. d. photosynthesis. e. all of these.