Presents a laboratory exercise that demonstrates the sensitivity of the Polymerase Chain Reaction as well as its potential application to forensic analysis during a criminal investigation. Can also be used to introduce, review, and integrate population and molecular genetics topics such as genotypes, multiple alleles, allelic and genotypic…

Presents a polymerase chain reaction (PCR) laboratory exercise that can be performed by introductory biology students in 1 45- to 55-minute class period. Includes a general description of the polymerase chain reaction, materials needed, procedure, and details of interest to teachers. (JRH)

Explains an experiment in which the rotation of a patch of skin on a tadpole results in a frog with rotated spots, proving that the spot pattern is determined long before it becomes visible. Procedures used are included. (DH)

Describes a relatively simple method of extraction and purification of bacterial DNA. This technique permits advanced secondary-level science students to obtain adequate amounts of DNA from very small pellets of bacteria and to observe some of its polymer properties. (ML)

Describes a laboratory method to allow students to complete electrophoresis and staining of DNA samples within 1 45-minute classroom period. (MKR)

Reviews methods of estimating pollen and seed dispersals and discusses the extent and frequency of gene exchange within and between populations. Offers suggestions for designing exercises suitable for estimating dispersal distances in natural plant populations. (ML)

Ink-cap mushrooms can be easily grown in culture and provide students with ideal material for studying a wide range of biological problems. The life cycle is discussed extensively with hints for inoculating plates, staining, and isolating basidiospores. Exercises are easy, safe, and provide opportunity to demonstrate several microbiological…

Described is an activity in which students are able to determine that DNA can be transferred between bacteria and should be able to predict the type of DNA transferred. Methods, materials, and results are discussed. (CW)

Focuses on genetic concepts that form key components of transmission genetics and illustrates how the domestic cat can be used in the teaching of these concepts. Offers examples of how laboratory experiences with the cat can enhance student learning of genetics. (ML)

Suggests a new experiment to study the genetic material of eukaryotes. It is based on the rapid growth and interest of the research on chromatin. (TW)

An interactive computer program in microbial genetics is described. The simulation allows students to work at their own pace and develop understanding of microbial techniques as they choose donor bacterial strains, specify selective media, and interact with demonstration experiments. Sample questions and outputs are included. (DH)

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)

Cites reasons why Penicillium claviforme is an exceptionally good species for ultraviolet induced mutation experiments. Provides a set of laboratory instructions for teachers and students. Includes a discussion section. (ML)

Described is a study which was developed to find the proportion of cross-dominance in young adults. Procedures and statistical tests are discussed. The tasks used in the assessment of cross-dominance are described. Results indicated that all persons suffered from some cross-dominance. (CW)

Describes science experiments for undergraduate biology instruction on the concepts of mutation and characterization of the resulting mutant strains. The filamentous fungi "Fusarium moniliforme" is used to illustrate the induction of mutants (mutagenesis), identification of the mutated gene, construction of a biochemical pathway, and…