hip on change value factor to donor Donor A. fert. Am) 1 ene) 1 B.mort. AP yh Ala) +-der) i Recipient C. fert. Am) 1 e—P(2\) +7) r D.mort. AP() y) eo Ale +7-+de) r Notes: The altruist allele will increase (decrease) in frequency if the sum of row products is positive (negative). The notation is defined in th