In examining what sex ratio control might mean in the animal world from a positive viewpoint, one may ask "What are the advantages of sex control?" The answer most frequently given is that it permits the breeder to have what he wants. However, in practice, what the breeder and commercial...
Conclusion Worldwide, there is significant variability in the sex ratio of IBD according to age at onset with males having higher incidence of CD before the age of 15, after which there is a female predominance, with an opposite trend in age at onset for UC where there is a striking male...
电商推荐学习代码,电影数据集中采用了多模型对比选优的方式 importpandasaspdimportnumpyasnpimportmatplotlibasmpl# 可视化importseabornassnsimportmatplotlib.pyplotaspltimportrandomasrndfromdatetimeimportdatetimeimportreimportmissingnoasmsnoimporttensorflowastffromtensorflow.kerasimportlayersfromtensorflow.keras.modelsimportM...
Given the similarity of positive psychological phenomena between the two countries, this study sought to determine if the sex ratio at birth increased in France circa nine months after the 1998 World Cup.关键词: Population stress Pregnancy Sex ratio World Cup France ...
Experimental manipulation of queen number affects colony sex ratio investment in the highly polygynous ant Formica exsecta In polygynous (multiple queens per nest) ants, queen dispersal is often limited with young queens being recruited within the parental colony. This mode of ......