According to Hamilton's rule rB>C, altruistic behaviors can be maintained in a population when
A) altruist and recipient are first cousins
B) costs of altruistic act are balanced by how many genes altruist and recipient share
C) costs of altruistic act with a stranger are balanced by benefits incurred
D) relatedness & increase in fitness more than balance the fitness costs to the altruist
E) none of these.
Ans: D) relatedness & increase in fitness more than balance the fitness costs to the altruist
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