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#1
03-20-2013
 USMLE Forums Scout Steps History: Not yet Posts: 10 Threads: 5 Thanked 2 Times in 2 Posts Reputation: 12
Hamilton's rule to predict the maximum probability

Another question. Answer is B - I don't seem to get this.

Assuming that snonting is an altruistic behavior that is maintained due to kin selection, consider the following situation:
A reproductive male, X, lives with his mate near his parents. His other siblings are all females and no longer live nearby. Based on your observations, you know that X is likely to produce 12 MORE offspring during his life. His parents, however, are older and will only produce 3 more offspring during their lives. One day, a situation arises where X’s parents have a 50% chance of death. However, if X snonts, his parents will survive with 100% probability.
Given this information, use Hamilton's rule to predict the maximum probability of death that X can incur in this situation in order for snonting to be favored.
A. 6.25%
B. 12.5%
C. 25%
D. 37.5%
E. 50%

#2
03-20-2013
 USMLE Forums Guru Steps History: 1+CK+CS Posts: 378 Threads: 68 Thanked 203 Times in 99 Posts Reputation: 213

mmmmmmmmmmmmm.......WHAT ?!
#3
03-20-2013
 USMLE Forums Addict Steps History: Not yet Posts: 135 Threads: 3 Thanked 73 Times in 48 Posts Reputation: 83

LOL

Where r u getting these things from?
Should prolly focus on things related to medicine instead of fooling around.
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 Tags Genetics-, Step-1-Questions

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