Reports on the analysis of several syllabus guidelines and school textbooks that indicate that DNA appears mainly in upper school curricula where the emphasis is on cellular responses and classical Mendelian genetics and substantial areas of contemporary genetics are omitted. (Contains 16 references.) (Author/YDS)

Outlines a workshop for teachers that illustrates a method of extracting DNA and provides instructions on how to do some simple work with DNA without sophisticated and expensive equipment. Provides details on viscosity studies and breaking DNA molecules. (DDR)

Explored genetic and environmental etiologies of individual differences in printed word recognition and related skills in identical and fraternal twin 8- to 18-year-olds. Found evidence for moderate genetic influences common between IQ, phoneme awareness, and word-reading skills and for stronger IQ-independent genetic influences that were common…

This study examined Autism Diagnostic Interviews Revised (ADI-R) data for 69 autistic subjects from multiplex (MP) families (with more than one autistic member) and 88 autistic subjects from singleton (SP) families (with only one autistic member). Multivariate analysis revealed no differences between verbal or nonverbal MP and SP groups for ADI-R…

This article explores the gene-finding process for developmental speech disorders (DSDs), specifically disorders of articulation/phonology and stuttering. It reviews existing behavioral genetic studies of these phenotypes, discusses roadblocks that may impede the molecular study of DSDs, and reviews the findings of the small number of molecular…

Described is the basic biology involved in mapping chromosomes as presented at a symposium at a recent meeting of the American Chemical Association which focused on the Human Genome Initiative. Different types of gene maps and techniques used to produce gene maps are discussed. (CW)

Investigates how 11th graders think with respect to evolution and the development of species. Reports that the pupils have extensive factual knowledge, but have difficulty in relating these facts in coherent descriptions and explanations. (Author/YP)

Described is an exercise which uses inexpensive and easy-to-make materials to demonstrate the basic fundamentals of heredity. Discusses two approaches using a hypothetical insert to demonstrate inheritance, mitosis, meiosis, and genotypic and phenotypic frequencies. (CW)

Described is a laboratory activity in which high school students may perform a karyotype analysis of their own chromosomes. Materials and procedures are detailed. A source of materials for this exercise is provided. (CW)

Analysis of speech samples from four-year-old monozygotic and dizygotic twins revealed that the monozygotic twins were significantly more likely to misproduce the same sound on an articulation test than were dizygotic twins. The dizygotic twins were no more likely to share errors than were children who were both genetically and environmentally…

Describes the contribution made to the quality of human life by the study of genetics. Presents a description of the current status of genetics education. Suggests changes in genetics education necessary to keep up with new developments. (39 references) (CW)

Presents a genetic game that allows students to construct a human face as determined by the random selection of alleles from a gene pool. Can be used to teach the concepts of chromosome inheritance, dominance, incomplete dominance, multiple alleles, multiple loci, independent assortment, multiple gene traits, and evolution. (JRH)

Examines how problem solving in the domain of Mendelian genetics proceeds in situations where solvers' mental models are insufficient to solve problems at hand (model-revising problem solving). The study addressed the heuristics characteristic of successful model-revising problem solving and other aspects of student model use. (LZ)

Posits that an evolutionary perspective can unite the study of the typical development for and individual variation within a species and that environments within the normal range for a species are required for species-normal development. Individual differences in children reared in normal environments arise primarily from genetic variation and…

Describes an ongoing project that is investigating the correlation between journal cost and citation ratings in the fields of political science and genetics. Previous studies that relate journal costs to other variables are reviewed; the conceptual framework is explained; limitations of the study are considered; and further research is suggested.…