Describes in detail the laboratory procedure for studying the process of amitosis in the vegetative cells of Nitella axillaris. (BR)

Presents examples using biotechnology applications to clarify topics in genetics, such as DNA replication, gene segregation and polar bodies, multiple alleles, and antisense sequences. (MKR)

Discusses the authors thoughts after reading Darwin's "The Origin of Species" and Huxley's "Darwiniana"--a collection of writings on evolution and Darwin. Also discusses theories of evolution. (PR)

Describes a laboratory study in which students evaluate, in ecological terms, different landscapes representing ecosystems under varying degrees of human domination. Also discusses the context within which the study is arranged. (JN)

Background information, list of required materials, and procedures are provided for an immunological assay which has been modified for use as a classroom/laboratory demonstration of antigen-antibody reaction. The assay is designed for a two and one-half hour laboratory period but may be modified for one hour laboratories. (JN)

Environmental science articles submitted for extra credit by 281 of 677 students in introductory ecology courses were examined to find what types of magazines were used, the range of topics, and which type of student responded. (MKR)

Describes procedures for extracting nematodes from soil and culturing them for study and experimentation. (PB)

The author offers laboratory procedures for experiments using the bacterium, Agrobacterium tumefaciens, which causes crown gall disease in a large number of plants. Three different approaches to growing a culture are given. (SA)

Presents results of a two-year study regarding factors causing student difficulties in performing investigative activities in a beginning biology course. Also investigates the usefulness of written guidelines in alleviating these difficulties. A model for student investigations is proposed. (CS)

Examined 10 introductory college-level, general biology survey textbooks for the coverage of algae to assess the efficacy of coverage. Describes a proposal of seven kingdoms and discusses the disposition of algae among five of these kingdoms. Contends that textbooks should highlight the concept of algae across the five kingdoms. Contains 59…

Presents an interview with Walbot who has done genetic research using corn plants. (PR)

Describes a bird-study and banding activity designed for students in urban and suburban areas. (PEB)

The use of toluidine blue as a stain for plant tissues is advocated. Directions for hand-cut tissue staining are provided. (PEB)