General Biology I

study guides for every class

that actually explain what's on your next test

Kin selection

from class:

General Biology I

Definition

Kin selection is an evolutionary strategy that favors the reproductive success of an organism's relatives, even at a cost to the organism's own survival and reproduction. It explains altruistic behavior where individuals help their kin to increase shared genetic fitness.

congrats on reading the definition of kin selection. now let's actually learn it.

ok, let's learn stuff

5 Must Know Facts For Your Next Test

  1. Kin selection is based on the concept of inclusive fitness, which considers both direct and indirect genetic contributions to future generations.
  2. Hamilton's Rule (rB > C) quantifies kin selection, where 'r' is the coefficient of relatedness, 'B' is the benefit to the recipient, and 'C' is the cost to the altruist.
  3. Kin selection can lead to behaviors like parental care, alarm calling in social animals, and cooperative breeding.
  4. Species like bees and ants exhibit extreme forms of kin selection known as eusociality, where sterile workers support reproductive individuals.
  5. Kin recognition mechanisms are crucial for kin selection to occur; these mechanisms can be based on scent, visual cues, or learned behaviors.

Review Questions

  • What principle explains how organisms increase their own genetic success by helping relatives reproduce?
  • How does Hamilton's Rule relate to kin selection?
  • Can you provide an example of a species that exhibits eusocial behavior due to kin selection?
© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.
Glossary
Guides