Twin births and twins from a hereditary point of view / by Gunnar Dahlberg.

  • Dahlberg, Gunnar, 1893-1956.
Date:
1926
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: Twin births and twins from a hereditary point of view / by Gunnar Dahlberg. Source: Wellcome Collection.

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    6 Part И. TWINS FROM A HEREDITARY POINT OF VIEW. Similarity of twins: Resemblance of twins from a theoretical point of view page 135 Resemblance of twins from a practical point of view ........ » 142 The configuration of the ear in twins ; » 143 Finger-prints of twins d 147 The diagnosis of monozygotism 1 > 148 The influence on twins of intra-uterine conditions » 148 Stature and weight of twins at birth » 149 Superfetatio and superfecundatio » 154 Mortality of twins in utero, and during the first years of life > 156 Hereditary dissimilarity of monozygotic twins: Genotypical asymmetrical characters » 160 Naevus formation in twins » 173 Right- and-left-handedness in twins » 177 Clasping hands » 183 Functional superiority of one leg » 185 Résumé of genotypical asymmetries » 185 Environment and anthropological characteristics » 186 Twins from an anthropological point of view: History » 194 Collecting twin material » 194 Measuring method .■ » 195 Error in mèasuring » Д96 Anthropological differences in absolute measures » 203 The differences in pro mille of the measurements » 205 Comparisons between dizygotic twins and brothers ! ..: » 212 Error in measuring, environment and heredity » 215 The influence of sex » 227 The influence of age » 234 Anthropological dissimilarities between first and second born twins т> 246 The interrelation of the measurements » 250 Eye and hair colour in twins » 256 Comparison with the results of other investigators » 259 Twins from a pathological point of view » 266 Résumé of results; Part I » 272 Part II » 277 Literature » 283 Appendix I: Measurements on twins »1—15 Appendix II: Photographs of twins and ear photographs.. »1—85