托福单词speciation什么意思-speciation词组短语_例句_同义词

speciation意思

n.物种形成

speciation词组短语

extrinsic speciation外因性物种的形成

apomictic speciation内因成种

Stasipatric speciation滞域成种

Directed speciation定向成种

chromosomal speciation染色体种的分化;染色体变化成种;

infraspecific speciation抗体

secondary speciation次级物种形成

speciation近义词

n.

evolution,organic evolution,phylogeny,phylogenesis

speciation例句

1.Polyploidy is a mechanism often attributed to causing some speciation events in sympatry.

多倍性常被当作引起在同一地区并存的物种发生物种形成事件的一种机制。

2.First,there is speciation(species-splitting or cladogenesis),caused by geographical isolation or some other mechanism.

首先，因地理隔离或其它一些机制导致物种形成（物种分裂或系枝进化）。

3.This conclusion agress with the viewpoint that this species is on the speciation stage of migration towards north.

这一结论支持该种目前正处于向北迁移的分化阶段的观点。

4.Jolley(1993)is a study of dissolved phosphorus speciation in the lower molongolo sewage treatment plant(Canberra,Australia)detected no triphosphate in raw sewage entering the plant.

Jolley(1993)进行得一项研究中在溶解磷形态下molongolo污水处理厂（堪培拉，澳大利亚）未发现任何未经处理得污水中有三磷酸盐进入工厂。