Research on the relationship between heredity and nutrition in laboratory animals, particularly rats, points to a similar relationship between human heredity and nutritional requirements. Suggests an experiment which science honor students can undertake to investigate the relationship between strain differences in rats and the utilization of…

Describes set of specific steps (procedural knowledge) used when solving monohybrid/dihybrid cross problems and extent to which students could justify execution of each step in terms of their conceptual knowledge of genetics and meiosis. Implications for genetics instruction are discussed. (JN)

The knowledge of and attitudes toward genetics of allopathic and osteopathic physicians of the Mid-Michigan area was studied. The type of degrees made no difference with respect to physicians' knowledge of genetics, while their specialties and years of graduation from medical school had a significant impact on their performances. (Author/MLW)

In 1940 Dennis found Hopi infants slower in onset of walking, whether or not the cradleboard was used. Present differences in genetic background, health, and nutrition were compared showing that an inadequate diet may have accounted for former walking delays. The present onset of walking may reflect external food program improvements in nutrition.…

Provides a comprehensive contemporary summary of the world literature on IQ correlations between relatives. A profile of average correlations consistent with a polygenic mode of inheritence is revealed from a summary of 111 studies, although a marked degree of heterogeneity of the correlations within familial groupings is also found. (CS)

The social service staff of the H. K. Cooper Clinic (Lancaster, Pennsylvania) conducted a seminar for young adults with cleft lip and palate (CL/P) and their families. The seminar was designed to respond to questions and concerns regarding the impact of CL/P on employment, social relations, and genetics. (SB)

In a study of 105 twin pairs, correlations for identical pairs were significantly higher than fraternal pairs on all but one factor: tough-mindedness. Data suggested several components and the total organization of those components of personality and temperament are genetically influenced. (Author)

Discusses the origin and intended meaning of the phrase "survival of the fittest." Traces the concept of "fitness" in a neo-Darwinian sense and outlines the use of the term in other contexts. (Author/MA)

Critiques an environmentalist view of the effects of nature and nurture on behavior. Argues for an interactionist position in which nature and nurture are totally and inextricably involved in each and every organismic response. (MP)