| 不同群体规模下闭锁群体遗传漂变的模拟 |
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| 引用本文： | 鲁立刚,金深逊,曾继晶,王莉兴,鲁绍雄. 不同群体规模下闭锁群体遗传漂变的模拟[J]. 黑龙江畜牧兽医, 2012, 0(13): 46-48 |
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| 作者姓名： | 鲁立刚 金深逊 曾继晶 王莉兴 鲁绍雄 |
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| 作者单位： | 毕节地区畜牧兽医科学研究所;云南省家畜改良工作站;云南农业大学动物科学技术学院 |
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| 基金项目： | “十一五”国家科技支撑计划项目(2007BAD53B03) |
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| 摘 要： | 为了研究在施行随机留种、随机交配、世代不重叠、群体间个体无迁移、整个保种过程中基因不发生突变的原位保种群体中遗传漂变的变化情况,试验采用计算机模拟方法针对不同群体规模下闭锁群体基因频率、基因型频率在50个世代中的变化进行研究。结果表明:群体规模越大,基因频率、基因型频率在世代间波动的幅度越小,因此世代间随机遗传漂变基因被固定或丢失的概率越小。
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| 关 键 词： | 群体规模 遗传漂变 计算机模拟 |
Simulation of genetic drift for closed population under different population size |
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| LU Li-gang,JIN Shen-xun,ZENG Ji-jing,WANG Li-xing,LU Shao-xiong. Simulation of genetic drift for closed population under different population size[J]. Heilongjiang Animal Science And veterinary Medicine, 2012, 0(13): 46-48 |
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| Authors: | LU Li-gang JIN Shen-xun ZENG Ji-jing WANG Li-xing LU Shao-xiong |
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| Affiliation: | 1.Institute of Animal Husbandry and Veterinary Science in Bijie Prefecture,Bijie 551700,China; 2.Yunnan Domestic Animal Improvement Station,Kunming 650201,China;3.College of Animal Science and Technology,Yunnan Agricultural University,Kunming 650201,China) |
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| Abstract: | To study the changes of genetic drift in situ conservation groups with non-mutant gene,under the conditions of random breed,random mating,non-overlapping generations and individuals without migration between populations.Computer simulation was used to determine the changes of gene frequency and genotype frequency of closed populations with different population sizes in fifty generations.The results showed that the greater population size,the smaller random fluctuation of gene frequency and genotype frequency between generations,and the lower probability of gene loss or fixation due to random genetic drift between generations. |
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| Keywords: | population size genetic drift computer simulation |
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