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第三讲 群体的概念和群体的遗传变异 一、群体的概念 一个群体是指若干个体(植株)的总体(或称集团),而且是指一个有生命的正在繁殖着的若干个体的总体。群体的遗传组成就是指这些个体间遗传型的数目,例如,紫花和白花的两个大豆品种其花色基因的组成是:紫花品种的遗传型为WW或W_w,白花品种的遗传型为ww。这指一个二倍体遗传,在位点上仅有一对等位基因W和w存在于个体间的组成。在这个群体里的遗传结构,用个体间三种遗传型(基因型)的数目即频数或者频率表示,这些频率
Lecture 3: Concept of Population and Genetic Variation of Colony I. Concept of Colony A colony refers to the population (or group) of a number of individuals (plants) and refers to the population as a whole of a living individual that is breeding. The genetic composition of a group refers to the number of individuals inherited from each other. For example, the composition of the flower color genes of two soybean cultivars, Violet and White, is: The genetic type of the purple flower is WW or W_w, and the white flower is ww. This refers to a diploid inheritance in which only one pair of alleles, W and W, are present in the inter-individual composition. The genetic structure in this group is expressed in terms of the number of three genetic types (genotypes), ie the frequency or frequency, of individuals, these frequencies