punctuated equilibra是什么意思?上课的时候教授提到的._百度作业帮
是哈佛大学提出来的跃进-平衡理论.详细看下面的文章.Punctuated equilibrium (also called punctuated equilibria) is a theory in evolutionary biology which proposes that most species will exhibit little net evolutionary change for most of their geological history,remaining in an extended state called stasis.When significant evolutionary change occurs,the theory proposes that it is generally restricted to rare and geologically rapid events of branching speciation called cladogenesis.Cladogenesis is the process by which a species splits into two distinct species,rather than one species gradually transforming into another.[1]Punctuated equilibrium is commonly contrasted against the theory of phyletic gradualism,which states that evolution generally occurs uniformly and by the steady and gradual transformation of whole lineages (called anagenesis).In this view,evolution is seen as generally smooth and continuous.In 1972,paleontologists Niles Eldredge and Stephen Jay Gould published a landmark paper developing this theory and called it punctuated equilibria.[2] Their paper built upon Ernst Mayr's theory of geographic speciation,[3] I.Michael Lerner's theories of developmental and genetic homeostasis,[4] as well as their own empirical research.[5][6] Eldredge and Gould proposed that the degree of gradualism commonly attributed to Charles Darwin is virtually nonexistent in the fossil record,and that stasis dominates the history of most fossil species
其他类似问题
跃进—平衡理论」(Punctuated-Equilibra Theory)：这是哈佛大学Gould教授在1977 年所提出的新理论。
说的是这个不 至于那个理论你可以自己查阅一下 生活愉快
扫描下载二维码第三人称单数:
punctuate是什么意思，词典释义与在线翻译：
提示：各行业词典APP中含有本词条的独家正版内容，在手机上可看到更多释义内容。
punctuated&:&加 ...
在&&中查看更多...
insert punctuation marks into
to stress, sin
"Dr. Jones emphasizes exercise in addition to a change in diet"
"Her sharp questions punctuated the speaker's drone"
punctuate的用法和样例：
用作动词 (v.)
The transcription of his speech must be punctuated.
他的讲话文本得加上标点符号。
The children have not yet learned to punctuate correctly.
这些小学生尚未学会正确使用标点符号。
He made gestures to punctuate his speech.
他打手势来强调他的讲话。
The announcement was punctuated by cheers from the crowd.
在宣布过程中，群众的欢呼声此起彼伏。
He punctuated his remarks with thumps on the table.
他讲话时不时地捶着桌子。
Apollinaire does not punctuate his poems.
出自：D. Arkell
punctuate的海词问答与网友补充：
punctuate的相关资料：
punctuated&:&加标点于…, ...
在&&中查看更多...
【近义词】
用连字符连接...
punctuated:punctuate v. 加标点于,不时打断vi. 使用标点,加标点 英英解释:动词punctuate:1. insert punctuation marks into同义词：mark2. to st…
相关词典网站：}