Relationship between proportion of male offspring in a clutch and size of the clutch in the dwarf spider Oedothorax gibbosus. Solid line depicts the linear correlation. The dotted line depicts a 50:50 sex ratio and is given for illustrative purposes.
Vanthournout et al. BMC Evolutionary Biology 2011 11:15 doi:10.1186/1471-2148-11-15