Talk:Identical twins

"Wilhelm Weinberg made the first estimate of the rate of twinning. Realizing that identical twins would have to be the same sex, while non-identical twins could be either same or opposite sex, Weinberg derived a formula for estimating the frequency of MZ and DZ twins from the ratio of same and opposite sex twins to the total of maternities.[6] Weinberg also estimated that the heritability of twinning itself was close to zero. That means the capacity to have twins is not hereditary." Shouldn't it be noted that this was the opinion of one scientist, and was an estimation? The main Wikipedia page on twins says that the proclivity for a woman to have twins increases if she has a family history of twinning cases.

English wiki does not have an exact equivalent to this page. There "Identical twin" redirects to "Twin". Under "Incidence of identical twins" they say The likelihood of a single fertilization resulting in monozygotic twins is uniformly distributed in all populations around the world. Also they say (under "Statistics") There is no known genetic link for identical twinning. Our text is quite right, and you are mistaken. The situation for fraternal twins is quite different. Macdonald-ross (talk) 06:15, 9 May 2014 (UTC)