Need explanation

this passage is from the book by H G wells the time machine...

Where population is balanced and abundant, much child-bearing becomes an evil rather than a blessing to the state: where violence comes but rarely and offspring are secure, there is less necessity - indeed there is no necessity - of an efficent family, and the specialization of the sexes with reference to their children's needs disappears.

Ok...does it mean human will eventually become "shemale"? O.o?

Not shemale englishnewb. specialisation of the sexes with reference to the role of women as mothers as nurturers and carers of children and men being providers and protectors.

EDIT Why special-isation is auto spammed I do not understand.