Refer to the figure.
A major reason evolutionary biologists have puzzled over the ubiquity of sexual reproduction is often referred to as "the cost of males," which refers to the simple argument that the offspring of asexual females can produce offspring themselves, whereas only half of the offspring of sexual females can do so. Based on the model in the figure, what proportion of individuals in the 4^th generation will be asexual?

Question

Refer to the figure.

A major reason evolutionary biologists have puzzled over the ubiquity of sexual reproduction is often referred to as "the cost of males," which refers to the simple argument that the offspring of asexual females can produce offspring themselves, whereas only half of the offspring of sexual females can do so. Based on the model in the figure, what proportion of individuals in the 4^th generation will be asexual?