1.
identical; monozygotic
Derived from a single fertilized egg, used primarily to describe identical twins who share the same genetic material.
一卵性双生児。
Identical twins.
二人は一卵性の双子だから見分けがつかない。
The two are identical twins, so I can't tell them apart.
一卵性の双子は遺伝子が同じだ。
Identical twins have the same genes.
一卵性 is a scientific/medical term for monozygotic.
COMMON USES:
- 一卵性双生児: identical twins (formal)
- 一卵性の双子: identical twins
COMPARISON:
- 一卵性: identical/monozygotic (from one egg)
- 二卵性: fraternal/dizygotic (from two eggs)
NOTE:
双子 alone just means "twins" without specifying identical or fraternal.