Compares different views of the role of sexual reproduction concerning the survival and evolution of species. Discusses the benefits and disadvantages of thelytoky, one nontraditional method of reproduction. (CW)

Reported are the differences in the understanding of concepts involved in photosynthesis and its role in ecology between students who had studied advanced biology and those who had not. Reports that the less experienced students had a poorer understanding of autotrophic respiration and energy aspects of photosynthesis. (CW)

Presents data from studies conducted on student self-discipline and attitude toward biology. Suggests reasons for the difficulties non-biology majors experience in college biology classes. Proposes several ways that biology instructors can help their students improve their performance and attitudes in non-major biology classes. (CW)

Presents an algorithm for solving problems related to multiple allelic frequencies in populations at equilibrium. Considers sample problems and provides their solution using this tabular algorithm. (CW)

Presents an experiment to demonstrate the degree to which environmental cations are taken up by susceptible lichen organisms in the field. Discusses the preparation of materials, procedures and typical results for this short laboratory exercise. (CW)

Presents an overview of 15 laboratory exercises used in an experimental ecology laboratory. Stresses that these exercises require no field work by students and are geared toward testing hypotheses. Suggests the use of these exercises in high school as well as college. (CW)

Describes an activity that combines manual and computer simulation of a population undergoing selection using three alternative genetic models. Discusses procedures used, model and how the computer simulation works. Stresses the advantage of using the student involvement of the manual exercise in combination with the speed of the computer…

Describes a procedure for the growth of tobacco plants in flasks. Demonstrates plant tissue culture manipulation, totipotency, and plant regeneration in approximately 12 weeks. Discusses methods, materials, and expected results. (CW)

This article presents a variety of topics discussed in this column and at a biology teachers' workshop concerning the quality and value of lab techniques used for teaching high school biology. Topics included are Drosophila salivary glands, sea urchins, innovations, dyes and networking. (CW)

Considers eight components to be considered in setting up a microcomputer center for use with college classes. Discussions include hardware, software, physical facility, furniture, technical support, personnel, continuing financial expenditures, and security. (CW)

Describes aspects of biology education in China, discussing school organization, science curriculum at primary and secondary levels, biology curriculum, environmental education, biology instruction, Chinese students, school factories, informal science education, popularization of science, college entrance requirements, and preservice and inservice…

Describes a new apparatus for Drosophila habitats which has the advantage of leaving pupae and adult flies undisturbed while being able to renew or move the media and larvae at will. (CS)

Lists advantages in the use of the blue gourami in laboratory experiments on reproduction and embryogenesis. Materials and procedures for maintaining and spawning blue gouramis are provided. Also includes details on microscopic examination of developing embryos and histological techniques for microscope slide preparation. (CS)

Cites numerous examples used by a pro-evolutionist in debate with the creationists associated with the Institute for Creation Research and the Creation Research Society. (CS)

Reports results of a study aiming to determine the initial levels of understanding of bioethical terms and concepts of college students. Data are summarized from the development and field testing of the Cognitive Biological Concept Assessment Instrument, which was administered to high school and college students and secondary science teachers. (CS)