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kinda
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kin selection
kin se·lec·tion


noun 
Definition:
 
natural selection promoting relatives: natural selection that favors self-sacrificing behavior toward relatives because, even if the individual dies, those relatives that survive will carry some of its genes
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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