The aim of his study was to detect the misconceptions about heredity in secondary school (Middle school) 8th Grade pupils' Science courses. In order to perform a beneficial and useful science education it was necessary. The space of study was 8th grade pupils that the data obtained from research assessed via appreciated statistical methods.As a results the findings of this research has been shown that pupil generally have many misconceptions could come from environment and family effects. To detect students' alternate view just before starting in the science education in the class may be useful for teaching and learning activities. Also a constructive approach designated according to students' misconception could be useful for education.