The second sentence in the novel indicates that the society uses central conditioning.
The single line that is the third paragraph indicates that fertilization (formally sex) now has a location and a director.
A few pages in you'll find the line "Bokanovsky's Process is one of the major instruments of social stability" (referring to making identical twins).
A few lines below you'll find "If we could bokonovskify indefinitely the whole problem would be solved."
"One hundred repetitions three nights a week for four years, thought Bernard Marx, who was a specialist on hypnopaedia. Sixty-two thousand four hundred repetitions make one truth." This explains how the society does mechanical brainwashing.