遗传学史在遗传学教学中的作用

科学史的研究和发展状况能反映一个国家的科学技术水平,遗传学史是生命科学发展史的一个重要分支,21世纪是生命科学的世纪,在遗传学教学中加强遗传学发展史的介绍,不仅具有教育功能,使学生了解遗传学的产生和发展,而且可以培养学生的思维能力和科学素质。本文就遗传学史的教育功能及在教学中的作用进行论述。     

Ecological genetics in the laboratory

This paper proposes the cyanogenesis polymorphism of white clover (Trifolium repens) as suitable material for demonstrating natural selection in school and college laboratories. Various published experimental methods for measuring selection within this polymorphism are briefly described and critically discussed and one particular procedure is recommended. Full details are given as to the nature and quantity of materials and organisms required and of the setting up, maintenance, and scoring of experiments. Some likely results of not following the instructions precisely are commented upon.     

Comparative genetics in the grasses

Comparative genetic studies have demonstrated that gene content and orders are highly conserved, both at the map and megabase level, between different species within the grass family. Integration of the genetic maps of rice, foxtail millet, sugar cane, sorghum, maize, the Triticeae cereals and oats into a single synthesis reveals that some chromosome arrangements characterise taxonomic groups, while others have arisen during or after speciation. A detailed analysis of the comparative maps of seven species, belonging to three subfamilies, and their applications are described below.     

Chemical genetics: where genetics and pharmacology meet

Genetics and pharmacology can elicit surprisingly different phenotypes despite targeting the same protein. This Essay explores these unexpected differences and their implications for biology and medicine.