This paper is an introduction to behavioral genetics for researchers and practitioners in language development and disorders. It identifies essential concepts and applies behavioral genetic research to the language sciences. It suggests that more complex questions may be successfully addressed through behavioral genetic paradigms. Research needs…

Presents an activity to construct DNA and RNA models consisting of hundreds of nucleotide units. Provides students with insight into the composition and use of the DNA code. (JRH)

Describes how to construct a model of a DNA molecule with inexpensive materials. (BR)

Suggestions for instructional improvement are provided in two topic areas. Explains the use of models in helping students to visualize selected concepts in genetic engineering and recommends the use of tropical tuber crops for encouraging students to conduct practical investigations. (ML)

In talent searches for gifted junior high school youth, those who score in the top two to five percent on a standardized achievement test are eligible to take the Scholastic Aptitude Test (SAT) which is regarded as a high-level ability test. While no important sex differences on the SAT verbal test have been observed, substantial sex differences…

Describes a model system to illustrate many of the biochemical and chromosomal processes involved in the transmission of genetic material. Uses commercially available beads. (BR)

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

Presented is a hand model which can be used to compare and contrast mitosis and meiosis. Features and procedures of the technique are detailed. Limitations of the models are discussed. (CW)

Describes an inexpensive and sturdy model of protein synthesis that students can make in groups or that can be used by the teacher for demonstrations. (PR)

Investigates high school students' understanding of the physical relationship of chromosomes and genes as expressed in their conceptual models and in their ability to manipulate the models to explain solutions to dihybrid cross problems. Describes three typical models and three students' reasoning processes. Discusses four implications. (YP)

Presents an activity in which students model the processes of meiosis, fertilization, development, and birth using model creatures called reebops. Students breed reebops to analyze chromosome combinations. Makes recommendations for activity utilization and identifies the strengths of the activity. (MDH)

Describes how a series of models can be constructed to illustrate the structure of eukaryotic chromosomes, emphasizing the structure of DNA. Suggests that by adapting a different scale for each series of models, a complete picture of the complex nature of the chromosome can be built up. (TW)

A paper model which is designed to give students a hands-on experience during lecture and blackboard instruction on DNA structure is provided. A list of materials, paper patterns, and procedures for using the models to teach DNA structure and replication are given. (CW)