Upon the analogy of definition of heterosis and inbreeding depresstion in terms of population genetics, the heterosis is thought to be evaluated overall with fitness. By establishing a mathematical model, the equilibr...Upon the analogy of definition of heterosis and inbreeding depresstion in terms of population genetics, the heterosis is thought to be evaluated overall with fitness. By establishing a mathematical model, the equilibrium status of three genotypes of random mating population (i. e. RR, Rr and rr) under different fitness, which exposes that heterosis is the precondition for multiallele to exist in the population. The heterosis protects the genetic diversity and makes the population owning a stronger self-control and evolution potential by improving the hetemzygote's fithess so as not to wash out different types of genes. It deepens Darwin's thoughts of individual section by making the individual fitness consonant with population fitness.展开更多
Floods have been popularly understood as the nightmares of human beings for their devastation causes. Floods in traditional Vietnamese minds are of the same type since ancient Vietnamese used a metaphor to address the...Floods have been popularly understood as the nightmares of human beings for their devastation causes. Floods in traditional Vietnamese minds are of the same type since ancient Vietnamese used a metaphor to address the floods in Red River Delta (Hanoi area) as un-auspicious marine spirit Thuy Tinh being defeated by the inland spirit Son Tinh in the legendary battle of life. Therefore, as being expressed in many cultures, floods are symbol of death and loss, and human beings have always attempted to get rich of or overcome the floods. However, the floods, under the awareness and pragmatic life of the people of An Giang Province as well as the whole Mekong River Delta (in Southern Vietnam), the floods are considered as the sign of wealth and happiness. What makes the floods to be so auspiciously acknowledged, and how do people manage to ~exploit" the floods to enrich their life? This paper is to investigate and generalize the approaches of utilizing the floods' resources to diversify their life, especially in cuisine culture. The research learns that the regularly stable floods in the Mekong River system strongly and positively affects the life of the local residents, and the community is further wise to exploit and transform the natural resources into their cultural world, mentally and materially, among which, ecotourism is a potentially prospective field展开更多
文摘Upon the analogy of definition of heterosis and inbreeding depresstion in terms of population genetics, the heterosis is thought to be evaluated overall with fitness. By establishing a mathematical model, the equilibrium status of three genotypes of random mating population (i. e. RR, Rr and rr) under different fitness, which exposes that heterosis is the precondition for multiallele to exist in the population. The heterosis protects the genetic diversity and makes the population owning a stronger self-control and evolution potential by improving the hetemzygote's fithess so as not to wash out different types of genes. It deepens Darwin's thoughts of individual section by making the individual fitness consonant with population fitness.
文摘Floods have been popularly understood as the nightmares of human beings for their devastation causes. Floods in traditional Vietnamese minds are of the same type since ancient Vietnamese used a metaphor to address the floods in Red River Delta (Hanoi area) as un-auspicious marine spirit Thuy Tinh being defeated by the inland spirit Son Tinh in the legendary battle of life. Therefore, as being expressed in many cultures, floods are symbol of death and loss, and human beings have always attempted to get rich of or overcome the floods. However, the floods, under the awareness and pragmatic life of the people of An Giang Province as well as the whole Mekong River Delta (in Southern Vietnam), the floods are considered as the sign of wealth and happiness. What makes the floods to be so auspiciously acknowledged, and how do people manage to ~exploit" the floods to enrich their life? This paper is to investigate and generalize the approaches of utilizing the floods' resources to diversify their life, especially in cuisine culture. The research learns that the regularly stable floods in the Mekong River system strongly and positively affects the life of the local residents, and the community is further wise to exploit and transform the natural resources into their cultural world, mentally and materially, among which, ecotourism is a potentially prospective field