Describes a procedure for making slides of microsporogenesis in Tradescantia. Uses photographs to demonstrate that Tradescantia is an ideal organism for studying meiosis in the classroom. Contains 17 references. (JRH)

A laboratory experiment that involves solving problems with conflicting evidence or inconsistent data. The experiment gives students opportunities to reason as scientists. (EB)

Background information, laboratory procedures (including matings performed), and results are presented for an open-ended investigation using the fruitfly Drosophila melanogaster. Once data are collected, students develop hypotheses to explain results as well as devise additional experiments to test their hypotheses. Calculation of chi-square for…

Described is The McKusick Catalog of human genetics. This article discusses how biology instructors could make use of this reference and answers specific questions regarding its use. (CW)

Traces the development of a teaching strategy, consisting of a model for bioethical decision making and related case studies, that addresses the value/moral/ethical concerns associated with the application of new biological knowledge. Discusses the implementation of this approach with college students and biology teachers. (DC)

Describes the revision of a college biology sequence, and outlines the content of some courses in the core. (AL)

Considers advantages of teaching chromosomal aspects of meiosis before introducing principles of Mendelian genetics. (AL)

Describes different sources of readings for understanding issues and concepts of genetic engineering. Broad categories of reading materials are: concerns about genetic engineering; its background; procedures; and social, ethical and legal issues. References are listed. (PS)

Describes sequence of activities for teaching three-point linkage concept and gene-mapping to high school biology students. Includes laboratory experiments and hypothetical examples for classroom discussion. (PS)

Presented are suggestions for using human pedigrees in the classroom and a generic pedigree that can be modified and used by instructors to provide variants for analysis. Eight single-gene mechanisms of inheritance are defined for use in this activity. (CW)

Establishes a rationale for teaching population genetics to students and inservice biology teachers. Suggests strategies for introducing students to the Hardy-Weinberg principle. (MDH)