EXAM #3 Flashcards
(170 cards)
Social groups include ________ ________ , within which the animals hold ________ ________ in common that may shape their social interactions.
extended families, genetic interests
Other types of social groups include ________, ________, and ________ in which members of many families may come together.
schools, flocks, and herds
eusocial groups
as having members that do not reproduce but rather serve as workers to benefit others in the group
For group living to persist the costs and benefits must add up so that the ______
fitness of the animals in the group is enhanced.
For any one animal, the decision to join a group must be the result of a situation in which________________
ultimately measured as fitness effects.
the benefits outweigh the costs,
selection favors behavior that has higher ______
benefits than costs.
Species with sterile workers are termed
___
eusocial.
______ species live in colonies with overlapping generations in which the mother (queen) plays the reproductive role and the offspring are workers.
eusocial
Sometimes animals come together in groups only to exploit ________ _______
social information
cooperation includes intentional signaling of events, such as ________
giving alarm calls when a predator is present.
Cooperation involves a cost for the donor animal, measurable in risk of____________ , and a __________________ for the recipient
lost direct fitness, and a potential fitness gain for the recipient
T/F: Donor behavior would never occur if the donor did not have a way to recover its fitness investment in the future
Truuuuue
kin selection
when an animal behaves in ways that add to the fitness of its close relatives, with whom it shares genes.
reciprocal altruism
the trading of aid in the present for potential returned aid in the future.
joint activity among animals to achieve a shared goal
cooperation
animals work together for some time so that the group as a whole benefits, but at a later date they compete for individual benefits.
selfish teamwork
What do you call a behavior performed without regard for self-interest?
Altruism
a truly altruistic act is defined as
one that involves one animal giving aid to another with no opportunity for payback
true altruism is entirely contrary to
darwinian thinking,
why is true altruism contrary to darwinian thinking?
darwinianism claims that everything an organism does is shaped by the drive to maximize its fitness
T/F: Truly altruistic aid-giving behavior is quite common
False
most cases of apparent altruism actually have roots in
self interest
What is the animal that gives the aid called
donor
the animal that receives the aid?
the recipient