21. It is heritable and is modified by natural selection. 22. It is considered to be the rarest of the heritable defects in ureagenesis. 23. A recent pair of studies suggests that behavior in this game is heritable . 24. Kamin has long opposed the idea that significant personal traits are largely heritable . 25. As opposed to a Caste system, classes are not heritable nor transferable. 26. However, these titles became extinct upon their deaths, not being heritable . 27. One study suggested that childhood gender nonconformity is heritable . 28. Research has shown that personality is 50 % heritable , but not always. 29. Parents create a home environment that is influenced by their own heritable characteristics. 30. Thus, environments less amenable to behavioural modification tend to be less heritable .
