Multiple choice

If a donor A sacrifices C offspring to help recipient B, its cousins to gain D offspring then the percentage relatedness of the donor to recipient is ______________.

  1. 50%

  2. 25%

  3. 30%

  4. 15%

  5. 100%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

According to Hamilton's rule : The relatedness of an offspring to its parents is 0.5. So, with its cousins the relatedness will be (0.5×0.5) = 0.25. Instead of giving birth to its own offspring with relatedness of 0.5 helping other siblings to reproduce will increase the relatedness to 0.5× that number of offsprings.

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