Describes a genetics activity illustrating genetic variation, mutation, and influence of environmental factors on genotypic expression. Irridiated bean seeds are planted and observed (x-rayed by dentist's x-ray machine at different exposures and for different times). Questions to extend the activity are discussed. (Author/JN)

Fifteen stations are used for a laboratory examination which focuses on evaluation of laboratory techniques, skills, procedures, and information management. Examples of several stations (with related questions) are provided. Areas measured include bacterial and cellular culturing, staining, and transferring procedures, genetics…

Reports the findings of a study which examined the knowledge and problem-solving strategies used by 14 ninth grade biology students to solve three types of basic genetics problems. Concludes that although most students could solve problems correctly, they sometimes lacked meaningful understanding or could not interrelate concepts. (DC)

Reported is a technique for chromosome staining that is simple, rapid, inexpensive, and requires little skill for success. (PB)

Based on the inference that a teaching strategy that facilitates students' cognitive development toward Piagetian formal operational thought patterns will also increase scholastic performance in introductory genetics, a self-study guide was developed, implemented and tested to facilitate a student's ability to apply formal operational thought…

Describes some basic findings in the radiation chemistry of genetic material derived from studies of model systems. Uses these findings to extrapolate the consequences of radiation damage to DNA within cells. (CS)

Describes a self-instructional game which simulates scientific research in bacterial genetics. (CS)

Describes the author's efforts to develop a means of teaching biology that facilitates learning and improves students' self-attitudes. Results indicate that students are more academically successful when the instructional materials complement the students' style of thinking. (Author/MA)

This article reviews sex studies of children of cousin marriages and three studies of children of incestuous matings. It is argued that these studies, taken as a whole, provide no substantial evidence for an inbreeding depression effect within the polygenic system commonly asserted to determine IQ. (Author/DB)

Presents excerpts from a teacher's manual which describes laboratory activities in genetics for advanced secondary school biology students. Maximized are the pedagogical aspects in choosing activities, arriving at intermediate decision-points, and planning the evaluation of pupil achievement. (CS)

The review examines issues and research relating to the involvement of the central nervous system in reading disorders. Questions regarding subtypes, pre- and perinatal influences, genetics, sex differences, and early identification are briefly surveyed along with a summary of major research findings in neuropsychology and neurology. (Author)

Describes laboratory techniques designed to familiarize students with meiosis and how microscopic preparations of meiosis are made. These techniques require the use of fresh or fixed flowers. Contains 18 references. (DDR)

Adaptive behavior was measured over time in 70 children, ages 1 to 12 years, with fragile X syndrome. With a mean of 4.4 assessments per child, adaptive behavior skills increased steadily and gradually over time. Children with less autistic behavior and higher percentages of the fragile X mental retardation gene protein showed better performance…

Describes a DNA model constructed with Legos, which allows students to work cooperatively. (YDS)