- Full text PDF available (2)
A further case of Down's syndrome with additional XYY aneuploidy is reported. The child has been followed for 5 years. It has not been possible to recognise any phenotypical feature which distinguishes the patient from others with Down's syndrome.
The nature of energy is not typically an explicit topic of physics instruction. Nonetheless, verbal and graphical representations of energy articulate models in which energy is conceptualized as a quasimaterial substance, a stimulus, or a vertical location. We argue that a substance ontology for energy is particularly productive in developing understanding… (More)
The results of buccal smear examinations of patients in five institutes for mental retardates, a psychiatric hospital, a home for physically handicapped children, two schools for the deaf, a normal primary school and a newborn nursery are reported. Extra X chromosomes were found in 4/1 000 mentally retarded males, in 1,8/1 000 mentally ill patients and in… (More)