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The article discusses the increased risk of Parkinson disease (PD) associated with glucocerebrosidase (GBA) genetic variants. It references a study by J. Mitsui et al, published in the periodical "Archives of Neurology" in 2009. The GBA variants are linked with the genetic disorder Gaucher disease. The study involved Japanese PD patients within the family groups of Gaucher disease and all of them underwent GBA resequencing.

The article presents information on several captive breeding programs which were undertaken in different parts of the world. A captive breeding program for komodo dragons in Chester zoo, Great Britain, is a rare example of success where the female managed to reproduce alone. Out of eleven eggs laid in May 21, 2006, five hatched in January 2007 producing healthy male komodos. Another example of a well-managed and successful captive population is that of Mexican wolves, listed as an endangered species in 1976. Under the captive breeding program, five wolves were captured between 1977 and 1980, and each wolf was genetically paired for breeding in order to minimize inbreeding and maximize genetic diversity.

Claims that genetically engineered meat and fish carry environmental and ethical dilemmas. Use of transgenic animals in medicine; Potential effects of transgenic fish on wild fish stocks; Factor that increases a male's chances of mating.