Deletion of the proximal long arm of chromosome 3 in an infant with features of Turner syndrome

A case of deletion of the proximal one-fourth of chromosome 3 long arm is described. While the Turner syndrome phenotype was present neonatally, the patient has no structural or numerical abnormality of the sex chromosomes, and thus may represent an autosomal deletion with a clinical picture similar to Turner syndrome. Her score on the Noonan syndrome index of Duncan et al. (1981) is 27%, making Noonan syndrome unlikely.     

Moon Dust… Key to Cosmic Secrets

Students examine the bacterial expansion pattern and attempt to relate what they discover to expanding powers of two. They also relate what they see and discover to increasing living space requirements in a world of infinite space and finite space to discover that living space decreases as a function of one over expanding powers of two. The population doubling effect is also related to refuse generation and food supply requirements as well as human drinking requirements. During their investigations, students engage in a series of concrete activities to demonstrate the various effects of unabated population expansion.