"Wilkinson-mechanical genius -- especial natural mechanical ability"
![](https://content.dnalc.org/content/c10/10981/10981.jpg)
A pedigree chart created to demonstrate positive traits thought by eugenicists to be hereditary.
- ID: 10981
- Source: DNALC.EA
A pedigree chart created to demonstrate positive traits thought by eugenicists to be hereditary.