I believe it simply means they're not alike as the twins reared in different homes.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Hotmale"Twins reared in the same home are no more alike than twins reared in different homes."It means that twins raised in the same home are not any more like each other than twins who are raised apart. Being raised together does not increase the degree of similarity in twins.