-migration
1 . 遷移
...明確,也有一些分類以天擇表示所有選擇作用,并分為生態(tài)選擇(ecological selection)與性擇。(1)基因流基因流也稱為遷移(migration),當(dāng)族群之間并未受到地理或是文化上的阻礙時(shí),基因變異會(huì)經(jīng)由一些個(gè)體的遷移,使基因在不同族群間擴(kuò)散,這樣的情形稱為基因流。恩斯特·麥爾認(rèn)為基因流類似.
2 . 移動(dòng)
...s),向細(xì)胞外基質(zhì)(extra cellular matrix,ECM)浸潤(rùn)(invasions)、移動(dòng)(migration)、蛋白水解作用(proteolysis)和次級(jí)生長(zhǎng)(secondary growth)。 1 多不.
3 . 移民
... taken place very rapidly in developing countries.9. migration移民[例] Scientists have studied the migrationof fish.
4 . 遷徙
鳥類的遷徙(migration)是自然界中最引人注意的生物學(xué)現(xiàn)象之一。早在二千多年前亞里斯多德的著作中就已經(jīng)注意到鳥類在何處越冬的問(wèn).
相關(guān)詞條
+seasonal migration
1 . 季節(jié)性遷移
seasonal distribution 季節(jié)性分布seasonal migration 季節(jié)性遷移;季節(jié)性回游seasonal periodicity 季節(jié)周期性
+migration problems and migration
1 . 移民問(wèn)題與移民
migration problems and migration policies in the european union ., 歐盟國(guó)家的移民問(wèn)題與移民政策.
+aqueous migration , water migration
1 . 水遷移
coefficient of aqueous migration , water migration coefficien水遷移系數(shù)
+migration and skilled migration
1 . 移民和技術(shù)移民
At present , business migration and skilled migration is a major migration trends ., 目前 , 商業(yè)移民和技術(shù)移民是移民的主要趨勢(shì).