Resumo: Nos últimos anos, os avanços nas Ciências Biológicas têm levado a sociedade a discutir diversas questões no campo da moral e da ética. Questões como engenharia genética, clonagem e pesquisas com células-tronco são questões chamadas de sociocientíficas por estarem na interface entre a ciência e a sociedade. Nesse trabalho buscamos entender como estudantes de Ensino Médio percebem e interpretam questões relacionadas à manipulação genética em seres humanos. Houve divisão de opiniões em relação à eugenia negativa, que se destina a remover características desfavorá-veis das pessoas; mas a eugenia positiva, que busca melhoramento de características estéticas, foi rejeitada por todos os estudantes. As variações nas opiniões em relação ao assunto tratado podem ser, em grande medida, devidas às representações sociais dos estudantes.Palavras-chave: Ensino de Biologia. Raciocínio informal. Raciocínio moral. Questões sociocientíficas. Abstract:In the recent years the advances in biological sciences has been convincing society to discuss issues concerning moral and ethics. Issues as cloning, stem-cell research and genetic engineering are called socioscientific issues because they put into evidence the interface between science and society. In this paper we aimed at understanding how High School students realize and interpret issues regarding human genetic improvement. As a result we have found divergent opinions regarding negative eugenics, specifically about its attempts of taking out undesirable characteristics of individuals; but there was an agreement among all the students in rejecting positive eugenics, that aims at improving individuals esthetical characteristics. The divergences and differences of opinions may be related to the students' social representations.
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