July 1, 2008, is the 150th anniversary of the first announcement of his discovery of natural selection, the main driving force of evolution. Since 2009 is the 200th anniversary of Darwin's birth Feb.
2008年7月1日是达尔文自然选择理论诞生150周年纪念日，该理论首次发现了自然选择是生物进化的主要推动力量。
Early selection for number of lambs born alive based on ewe birth type was ineffective.
根据母羊出生类型来早期选择产活羔数是无效的。
The known correlation of high birth order with low SES suggests that selection bias related to SES may be responsible for the association between birth order and NHL.
低SES与出生次序靠后之间的已知相关性表明SES相关的选择偏差可能影响出生次序和NHL患病风险之间的相关性。
Therefore, birth weight , yearling weight and weaning staple length could be used as reference parameters of assistant selection in early selection of quantitative traits.
因此初生重、断奶重与断奶毛长在数量性状的早期选择中可做为辅助选择的参考依据。
Therefore, birth weight , yearling weight and weaning staple length could be used as reference parameters of assistant selection in early selection of quantitative traits.
因此初生重、断奶重与断奶毛长在数量性状的早期选择中可做为辅助选择的参考依据。
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