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. Author manuscript; available in PMC: 2023 Jul 12.
Published in final edited form as: Twin Res Hum Genet. 2023 Jan 12;25(6):226–233. doi: 10.1017/thg.2022.35

Table 1a:

Number of Complete and Incomplete Twin Pairs, by Sex and Zygosity

Girls Boys

Monozygotic Dizygotic Monozygotic Dizygotic
Complete pairs, number 225 164 208 149
Incomplete pairs, number 3 10 13 8