Aging is one of those subjects that many biologists feel is largely unknown. Therefore, they often feel comfortable offering extremely facile generalizations that are either unsupported or directly refuted in the experimental literature. Despite this unfortunate precedent, aging is a very broad phenomenon that calls out for integration beyond the mere collecting together of results from disparate laboratory organisms. With this in mind, Part One offers several different synthetic perspectives. The editors, Rose and Finch, provide a verbal synthesis of the field that deliberately attempts to look at aging from both sides, the evolutionary and the molecular. The articles by Charlesworth and Clark both provide population genetic perspectives on aging, the former more mathematical, the latter more experimental. Bell takes a completely different approach, arguing that aging may not be the result of evolutionary forces. Bell's model instead proposes that aging could arise from the progressive deterioration of chronic host pathogen interactions. This is the first detailed publication of this model. It marks something of a return to the type of aging theories that predominated in the 1950's and 1960's, theories like the somatic mutation and error catastrophe theories. We hope that the reader will be interested by the contrast in views between the articles based on evolutionary theory and that of Bell. MR. Rose and C. E. Finch (eds. ), Genetics and Evolution of Aging, 5-12, 1994. © 1994 Kluwer Academic Publishers. The J aniform genetics of aging 2 Michael R. Rosel & Caleb E.
DISCUSSION The LPS that is normally present on the surface of S. typhimurium apparently acts as a partial barrier to the ... of the earlier work on this project , and to J. R. Roth and P. E. Hartman for helpful discussions and strains .
MUSEUMS The following is a list of museums with film programs , compiled from the Official Museum Directory ( Washington , D.C .: American Association of Museums , 1975 ) . Check the " Weekend ” section on Friday in The Washington Post ...
Principles of Medical Genetics
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基因改造,可以剔走色盲、不育、腫瘤和肌肉萎縮等疾病,是重要發明! 基因改造成功了,可以產生健康又長壽的特種新人類, ...
Explains the science behind modern treatments. Examines the impact on society and discusses the moral issues at stake.
为了解决这个问题,张进团队在“鸡蛋”还没有受精前进行细胞核移植,这种做法从技术上看是领先的,同时从伦理道德上也相对容易被接受。具体操作过程为,医生先移除Shaban的卵子原核,再植入同被去除卵子原核的捐赠者卵子内,然后授精。张进团队以这种方法, ...
This third edition of Human Molecular Genetics continues to provide a clear introduction to this complex and fast moving field. Now updated and revised throughout, the material covered...
Key Benefit: Known for its focus on problem-solving, conceptual understanding, and practical applications, this best-seller is 32 pages shorter than its previous edition. New features of the Seventh Edition...
The genetics revolution that began with the discovery of DNA fifty years ago has transformed the science of biology. It has given us unprecedented power over life itself in the...