The authors introduced some important concepts in population genetics, including effective population size, inbreeding, genetic drift and gene flow, and then proposed some areas in which population genetics can be usedfor the conservation of rare and endangered plants.

The genetic diversity of endangered species may be lost due to genetic drift and inbreeding, but this loss is more likely to be a symptom of endangerment rather than its cause.

Computer simulation was used to determine the random genetic drifts of a biallelic gene locus in closed populations under different initial gene frequencies,population sizes and male-female ratios,based on the assumption that there was no gene mutation and individual immigration between populations.

Premature convergence and genetic drift often occur while applying genetic algorithm to the Traveling Salesman Problem.

For solving effectively premature convergence and genetic drift that often occur in applying Gas to practice,the reason for the premature and genetic drift was analyzed.

Niching technique is a class of parallel evolution method that suppresses genetic drift by forming and maintaining stable subpopulations.

Analysis of genetic variation and stability of the content of petroleum ether extracts in flue_cured tobacco leaves;

Studies on the genetic variation of 9 populations of Tricula by SSR-PCR;

Nucleocapsid protein gene′s genetic variation of Newcastle disease virus TL1 strain;