Quiz 4 - Answer Key

Quiz 4 - Answer Key - BILD 3 Fall 2008 Professor C Wills...

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BILD 3 Fall 2008 Name: ___________________________ Professor C. Wills PID # : ___________________________ Section: Mon 9-9:50 AM ------------------------------------------------------------------------------------------------------------------------------------------ Page | 1 QUIZ 4 Answer Key 1. Briefly describe the driving force or pattern of relatedness between individuals that leads to altruistic behavior in populations where both males and females are diploid. Give TWO specific examples from lecture of such a population. (3 pts) Answer : Altruistic behavior can arise in populations where all members are diploid because inbreeding usually occurs, resulting in individuals with high coefficients of relationship with each other . Hence, members are more willing to sacrifice themselves to ensure that another member can survive and pass on most of their shared genes. Two examples of this type of population are termites and naked mole rats . 2. Should you sacrifice yourself for 1 brother and 5 cousins? Assume the cost to you is 1. Show the original equation as well as the calculations that led to your answer ! (And please remember to conclude with either a “YES” or “NO . ”) (3 pts) Answer : Since you are saving many individuals, rB value should be the total value of those you save.
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This note was uploaded on 10/16/2009 for the course BICD BILD 3 taught by Professor Wills during the Fall '08 term at UCSD.

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Quiz 4 - Answer Key - BILD 3 Fall 2008 Professor C Wills...

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