Biology - Organisms and Populations Question with Solution | TestHub

According to Fisher's principle, the most common evolutionary stable strategy for a sex ratio in a population is $1:1$.

If the population deviates from this ratio, the rarer sex will have a higher average reproductive success. This frequency-dependent selection favors parents who produce the rarer sex, eventually bringing the sex ratio back to $1:1$.

Thus, a $1:1$ ratio of males to females is the evolutionary stable strategy.

Answer: males and females are in a ratio of 1:1