CHAPTER IV. The Diagnosis of Twin Zygosity

Chapters in this book

1. Frontmatter i
2. Foreword vii
3. Preface ix
4. Acknowledgements xi
5. Contents xiii
6. Tables xix
7. Part One. Introduction
8. CHAPTER I. Genetic Study of Morphological Variation 3
9. Part Two. An Evaluation of the Twin Study Method
10. CHAPTER II. Methods of Analysis 15
11. CHAPTER III. Obtaining a Twin Sample 25
12. CHAPTER IV. The Diagnosis of Twin Zygosity 31
13. Part Three. The Design of the Study of Normal Morphological Variation
14. CHAPTER V. General Considerations 41
15. CHAPTER VI. The Source and an Evaluation of the Study Sample 44
16. CHAPTER VII. The Frequency of Twin Pairs in Relation to Sex and Zygosity 50
17. CHAPTER VIII. The Method of Analysis 59
18. Part Four. The Analysis of Morphological Variation
19. CHAPTER IX. Stature, Weight, and Ponderal Index 69
20. CHAPTER X. Anthropometry 77
21. CHAPTER XI. Fat, Bone, and Muscle 128
22. CHAPTER XII. The Analysis of a Body-Build Taxonomy 136
23. CHAPTER XIII. A Masculinity and Femininity Rating 145
24. Part Five. Summary and Conclusions
25. CHAPTER XIV. Summary and Conclusions 157
26. Appendices
27. APPENDIX I–A The Study Procedure 165
28. APPENDIX I–B Reasons for Exclusion of Twin Pairs from Analysis 176
29. APPENDIX II. Zygosity Diagnosis 178
30. APPENDIX III–Α Sample Somatotyping Card 181
31. APPENDIX III–B Data on Unrelated Controls 182
32. APPENDIX IV. Masculinity and Femininity Rating Method 184
33. References 193
34. Index 203