Understanding natural selection requires mentally linking various key concepts and processes. Many students find it difficult to construct scientific explanations about natural selection and might display misconceptions. Our study aimed to investigate the understanding of natural selection and the existence of teleological or other misconceptions…

Reports on some potential teaching problems associated with children's scientific ideas about the concept of mutation. Provides information on the sample, methodology of study, and analysis. Concludes that in biology teaching the treatment of the concept must ensure that its genetic sense is specifically delineated. (RT)