The cephalochordate amphioxus has been widely regarded as an important model organism which is the clostest living invertebrate relative to the vertebrates.

文昌魚是現(xiàn)存的與脊椎動物最接近的非脊椎動物，長期以來文昌魚一直作為研究動物進化和胚胎發(fā)育的模式生物，被稱為"活化石"。

In the physiological condition, there is an uneven distribution of negative charge on cells' surface of all vertebrates.

在生理狀態(tài)下，一切脊椎動物細胞表面都帶有分布不均勻的負電荷久久无码AV三级。

The Bayan Nur Geopark holds the biggest and most important late Cretaceous dinosaur fossils in China or even in the East Asia, abundant in fossils, such as ceratopsia, ankylosauria, coelurosauria, furtherover chelonian, crocodilian, saurischian and mammalian, and egg fossils of vertebrates.

內(nèi)蒙古巴彥淖爾地質(zhì)公園恐龍園區(qū)是中國乃至東亞地區(qū)最大、最重要的晚白堊世恐龍化石產(chǎn)區(qū)www.aiman888.com，蘊藏著豐富的古生物化石黄片ftp，主要有角龍類、甲龍類国产专区第一页、獸腳類化石全部H视频，還有龜鱉類、鱷類狠狠cao青青青视频、蜥蜴類一级无码午夜在线观看、哺乳類以及多種不同的脊椎動物及其蛋化石。

While humans and other vertebrates do not produce chitin, our bodies are equipped to recognize and eliminate it.

雖然人類和其它脊椎動物不能產(chǎn)生甲殼素久久偷拍九九99热，當我們的身體能識別并清除甲殼素www.天天激情网.com。

It is clear from the comparison of the number of AmphiL34 and AmphiS29 genes with that of rat L34 and S29 genes that duplication of L34 and S29 genes occurred in vertebrates like rat. It therefore appears that the housekeeping ribosomal proteins genes such as L34 and S29 also underwent large-scale duplication during the early chordate evolution.

這一結(jié)果分別與大鼠7-9個L34拷貝數(shù)和14-17個S29拷貝數(shù)相比較，證明持家核糖體蛋白基因L34和S29基因在脊椎動物起源與進化過程中發(fā)生了大規(guī)模擴增无码一级午夜久久福利精品，符合兩輪基因倍增規(guī)律成年在线观看免费人视频。

The coelacanth is a descendant of the ancient marine organism that gave rise to the terrestrial vertebrates more than 360 million years ago.

腔棘魚的超保守因子是由LF-SINE通過染色體段間互換產(chǎn)生的，該片斷可以復(fù)制自己并且插入到染色體的不同位置久久久精品一区二。

Of or relating to the bacilli that commonly inhabit the intestines of human beings and other vertebrates,especially the colon bacillus.

大腸桿菌的寄生在人類和其他脊椎動物的直腸中的細菌的或與之相關(guān)的第四色色色av，尤其是結(jié)腸菌

Of or relating to the bacilli that commonly inhabit the intestines of human beings and other vertebrates,especially the colon bacillus .

大腸桿菌的寄生在人類和其他脊椎動物的直腸中的細菌的或與之相關(guān)的，尤其是結(jié)腸菌收藏反饋

Any of a group of DNA-containing viruses, including those that cause smallpox, cowpox, and other poxlike diseases in vertebrates.

痘病毒一組含脫氧核糖核酸的病毒黄网毛片aaa黄网毛片，包括那些在脊椎動物中引起天花成人乱人伦精品影视大全在线观看视频、牛痘以及其他類似疾病的病毒

It probably also eats other vertebrates and invertebrates such as frogs and crustaceans.

它可能還吃其它脊椎動物及無脊椎動物如蛙和甲殼類動物。