identical twin
monozygotic twin
monozygous twin

"Just as I would find my identical twin, in a large enough population of people."

A second look told him they weren't even identical twins.

They are identical twins and never leave each other's side.

He left, to return a few minutes later with his identical twin.

They are identical twins and were very close for many years.

But we do have teams in the project who are not identical twins.

She is the younger in a set of identical twins.

Or at least a dog that could have been his identical twin.

Of course we were the same, closer to each other than identical twins.

Did identical twins suddenly lose rights while I was away?