- 同卵双胞胎 tóngluǎnshuāngbāotāi identical twinstwins that develop from a single fertilized egg and share the same genetic code
- 异卵双胞胎 yìluǎnshuāngbāotāi fraternal twinsTwins who develop from two separate eggs that are fertilized at the same time; they can be the same or different sexes.
- 连体双胞胎 liántǐshuāngbāotāi conjoined twinsconjoined twins; Siamese twins
