Describes sequence of activities for teaching three-point linkage concept and gene-mapping to high school biology students. Includes laboratory experiments and hypothetical examples for classroom discussion. (PS)

An analysis, supported by recently published data, which suggests that IQ differences between groups may be explained by environmental factors. (Author/FF)

This analysis of manual asymmetry suggests that there are two main features to be explained: first, the normal bell-shaped distribution of relative skill, and secondly, the shift of the distributions toward the right. (Author)

The theory of X-linkage of major intellectual traits was hypothesized to explain the substantially greater numbers of males with mental retardation and learning disorders. (Author/CB)

Discusses the interaction of biological knowledge and human values, emphasizing problems raised by man's ability to control human evolution. Analyzes moral and religious concerns about eugenic artificial insemination or nuclear transplantation, including implications for the structure of the family and the basis of parenthood. (EB)

Examines the nature, application, limits and potential of applied genetics in plant breeding as a factor in South Asian agricultural development. Concludes other factors were also present in recent agricultural growth, and indicates some economic implications of continued growth, including problems of employment of displaced rural workers. (AL)

Medical and psychological evaluations and dermatoglyphic analysis of 4 XYY infants followed for 2 1/2 to 3 1/2 years are presented in case history format. (KW)

Summarized are clinical findings (including chromosome analysis and dermatoglyphics, as well as cytogenic findings in relatives) on five female and three male patients (age 15 years or older) with the cat cry or cri du chat syndrome. (KW)

Describes an institute founded to examine moral, ethical, and legal issues raised by possibilities of euthanasia, genetic engineering, behavior control, population control, and improved disease control. Indicates scope of present research. (Editor/AL)

A similar version was presented at a joint session of the American Academy on Mental Retardation and the American Association on Mental Deficiency (May, 1969). (Author)