Genetics study on circumference in preschool-age twins

【Objective】 To assess the genetic and environmental influences on body circumference of preschool-age children,and the effect of sex and age.【Methods】 A total of 101 twin pairs aged 3~6 years old were measured,including 42 monozygotic(MZ),30 like-sex and 29 opposite-sex dizygotic(DZ).The circumference items included head circumference,chest circumference,waist circumference,hip circumference,arm c…