Investigated were the feasibility and effectiveness of using programed materials with concomitant laboratory exercises in teaching genetics on the secondary level. Students from two white and two Negro high schools in the Atlantic Public School System participated, with one control and one experimental biology class in each school taught by the…

Discusses the mechanisms of genetic recombination with particular emphasis on the study of the fungus Sordaria brevicollis. The study of recombination is facilitated by the use of mutants of this fungus in which the color of the ascospores is affected. (JR)

Ordering principles, hierarchy, taxonomy, emergence, and decomposable systems are discussed. Examples of hierarchies are included. (CW)

Presents an outline of lectures given on this topic to British secondary students. Man's various ideas about the origin of life are included in three categories: those that consider life to have been created by a Divine Being; those that consider life to have developed from non-living matter; and those that consider life to be eternal. (MLH)

Argues that the topic of symbiosis has been greatly neglected and underemphasized in general-biology textbooks. Discusses many types and examples of symbiosis, and provides an extensive bibliography of the literature related to this topic. (JR)

Summarizes recent findings that help in understanding how evolution has brought about the diversity of plant life that presently exists. Discusses basic concepts of evolution, diversity and classification, the three-line hypothesis of plant evolution, the origin of fungi, and the geologic time table. Included are 31 references. (CW)

Demonstrates the magnitude of an extinction event by using a simulation to illustrate the massive nature of the loss of a family and the number of species that perish to achieve that result. (RT)

Over the past decade, much has been learned about the ocean's secrets and especially about the creatures of the deep sea. The deepest parts of the oceans are currently the focus of many new discoveries in both the physical and biological sciences. Middle school students find the deep sea fascinating and especially seem to enjoy its mysterious and…

This bilingual life/biological sciences glossary is one of a series designed to help high school students who are literate in Lao, but not in English, in meeting graduation requirements. Major concepts in life science and definitions of important and commonly used terms appear, first in Lao and then in English. (CMG)

The biological/life sciences are the subject of this bilingual glossary, one of a series developed to help high school students who are literate in Spanish, but not in English, to meet graduate requirements. A Spanish language version of major biological science concepts and of definitions of important and commonly used terms appears first. This…

Describes how to construct a model of a DNA molecule with inexpensive materials. (BR)