二に卵らん性せい

noun which may take the genitive case particle 'no', noun

fraternal (twins); dizygotic

Medical term describing twins that develop from two separate fertilized eggs. Often used in the phrase 二卵性双生児 (fraternal twins).

See also: 一卵性

• 二に卵らん性せい双そう生せい児じは遺い伝でん的