In movies and often in books, moral character was distributed in exactly that ratio between identical siblings: one evil, one good.

Unlike other mammals, any given litter of mole rats contains identical siblings, genetic clones of one another.

The cast of characters, though expanded, is essentially the same: an assortment of seemingly identical siblings, each endowed with some spectacular physical prowess.

The apartment house was not an only child but was a member of a large family of identical siblings.

Because identical siblings come from the same zygote they are genetically the same.

For example, a set of triplets may consist of two identical siblings and one fraternal sibling.

Among the lower castes, single embryos are "bokanovskified", so that they produce between eight and ninety-six identical siblings, making the citizens as uniform as possible.

Unless you happen either to have an identical sibling or to know a -pair, there's a good chance your knowledge of twins is based in part on fiction.

Kristen, her identical sibling, lived life with gusto.

This glided after the mother ship, and was followed by two identical siblings.