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)

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)

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 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)

An exercise that uses a common bacterium, E. coli, in great numbers, to detect a demonstrable change in the ability of some cells to become resistant to the common antibiotic streptomycin is presented. The procedure for preparing and pouring the gradient antibiotic plates is provided. The advantages of using the Basic Fuchsin in the agar are…

Describes an exercise that teaches Mendelian inheritance using human traits which students find exciting and relevant. (LS)

These demonstrations stress individual differences, a concept becoming increasingly important in psychological research. Intended for use in undergraduate psychology courses, four demonstrations that illustrate common examples of human variation are described. The demonstrations deal with the following individual differences: taste blindness,…

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)

Uses inexpensive equipment to demonstrate, through factorial design, an interaction between genetics and environment. Provides instructions for introducing and conducting the experiment, reporting that significant results are usually obtained. Notes the exercise is appropriate for experimental psychology, developmental psychology, behavior…

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)