Bob gives up a chance to marry and have a family in order to go to work in a distant country. Had he married, he would have had two surviving offspring. He sends money back to his sister, who as a result produces five surviving offspring instead of the two she would have had without Bob's assistance. What was Bob's cost to himself in units of direct fitness (such as children)?

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The Answer of Bob gives up a chance to marry and have a family in order to go to work in a distant country. Had he married, he would have had two surviving offspring. He sends money back to his sister, who as a result produces five surviving offspring instead of the two she would have had without Bob's assistance. What was Bob's cost to himself in units of direct fitness (such as children)?

Bob Gives Up a Chance to Marry and Have a Family