1:1 sex ratio of female to male offspring.
3:1 sex ratio of female to male offspring,
since workers share an r of 0.75 with their sisters, but only 0.25 with their haploid brothers.
| Parent-offsprirg conflict over sex ratio. | ||
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If a queen bee mates only once,
she has a r of 0.5 with either sons or daughters, so
kin selection predicts a 1:1 sex ratio of female to male offspring.
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In these hives, worker policing of eggs results in a 3:1 sex ratio of female to male offspring,
since workers share an r of 0.75 with their sisters, but only 0.25 with their haploid brothers.
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