Describes the rapid advance of molecular genetics over the past 20 years that have accounted for the origin of mutations. This research has revealed that variation within species is much greater than Darwin postulated. (Author/MA)

In a transcript from a radio show, Nobel Prize Winner Sir Macfarlane Burnet stresses the critical need for scientists to regulate their own activities in genetic research and cites the potential danger of creating a new form of polio which might escape. (CL)

Intelligence test data collected in 1931 through 1960 on 757 identical and 1,093 fraternal male twins, from the files of the Norwegian Armed Forces, were examined for secular trends in the heritability of intelligence test scores. Only ambiguous evidence of such trends was found. (SLD)

Particular reference is made to change seen as either a discrete or a continuous process. This topic is discussed in relation to progress and modern trends in biology and physics. Additionally discussed is the development of children's understanding of the process of change in physical and biological phenomena. (Author/RH)

A discussion of basic genetic principles is followed by a review of selected genetic syndromes involving learning disabilites (such as Noonan Syndrome, Neurofibromatosis, Pheuylketonuria, and cleft lip and palate). Guidelines for securing a genetic evaluation are given. (CL)

Presents a perspective on evolution which includes an explanation of the textbook theory of evolution, a review of evolutionary theory before Darwin, and an outline of Darwin's early theories. Describes a rethinking of evolutionary theory to include natural selection, conservative selection, discontinous evolution, catastrophism, and the…

This fact sheet offers broad information about autism and answers some of the more common questions that parents and families often have about the disorder. The following questions are answered in this document: (1) What is autism?; (2) What causes autism?; (3) How many people have autism?; (4) Is autism more common in certain groups of people?;…

Biological evolution can be carried out in the laboratory. With new knowledge available in genetics, possibilities are raised that genetic characters can be transferred in the future to embryos according to a predetermined plan. (PS)

Describes alternate methods of schematically representing genetic lines of descent, and illustrates the different patterns obtained with random mating, line breeding, parthanogentic males, cloning, and grafting. (AL)

Considers advantages of teaching chromosomal aspects of meiosis before introducing principles of Mendelian genetics. (AL)

Paper presented at the Merrill-Palmer Conference on Research and Teaching of Infant Development, February 13-15, 1970. (JE)

The development of the science of genetics through the confluence of separate theories is surveyed in this essay. An outline of classical genetics is emphasized. Interruptions in the continuity of development and the influence of genetics on the biological sciences and man as a social animal are discussed. (VW)