This study explored social and experiential differences in children's (aged 4 to 14 years) concepts of inheritance. The study utilized semi-structured interviews including four tasks that were designed to elicit judgements and explanations about different aspects of inheritance understanding. A variety of social and experiential factors were examined including, gender of participant, family composition, pet ownership, socio-economic status and urban/rural locale. The results indicated strong developmental changes and several social and environmental variations in children's knowledge of inheritance. Children from rural areas and from a higher socio-economic group showed a more sophisticated understanding of inheritance. Other variables including gender, owning a pet and having siblings had less impact on children's understanding of inheritance. Overall, children showed small variations in their inheritance concepts based on differences in experience and background. The precise causes of these differences remains an issue for future research. (Contains 3 tables.)