If one type of animal cannot bearing enough amount of offspring, it will depopulation

一個(gè)動(dòng)物物種如果不能在每一代生育足夠數(shù)量的后代免费不卡在线毛片，那它就要滅絕国内久久久久久久久久精品影院。

It turns out that desertion during incubation is likely to result in the demise of the unhatched offspring.

結(jié)果表明黄色国产区视频，在孵卵期離開會(huì)導(dǎo)致尚未孵化的后代死亡亚洲中文刮吗一本到午夜。

The end result was a larger headed offspring that self destruct.

結(jié)果是一個(gè)自我破壞的大頭顱后代欧美日韩亚洲。

His reasoning was disarmingly intuitive: in our hominid predecessors, communities of more sympathetic individuals were more successful in raising healthier offspring to the age of viability and reproduction -- the sine qua non of evolution.

他的理由完全是直覺性的：在我們?cè)甲嫦饶抢锶蘸磺谙吖劭矗切┢涑蓡T更具有同情心的群落在養(yǎng)育更加健壯的達(dá)到生育與繁殖能力的后代方面更成功——這是進(jìn)化的必要條件。

If one particular offspring is shown not to be up to the task , it is discarded .

如果一個(gè)單一特殊的后代表現(xiàn)出達(dá)不到任務(wù)的要求亚洲欧洲国产码专区在线男男，那它就會(huì)被丟棄日韩手机福利写真网站。

The decomposition of chromosome was a main problem in construction of BAC library. DNA discompose would be avoided or decreased by adjustments of component and pH of chromosome extraction buffer or pre-electrophoresis for 6-8h before digestion. Identification of inter-species hybrids was a necessary step for creating a new germplasm. Two samples were selected from offspring of hybridization and backcross of a cross between cabbage and Chinese cabbage.

鑒定種間雜種是利用遠(yuǎn)緣雜交創(chuàng)造新種質(zhì)時(shí)的一項(xiàng)重要工作，本研究運(yùn)用細(xì)胞核DNA含量流式測(cè)定技術(shù)欧美另类激情视频在线观看，對(duì)甘藍(lán)和白菜雜交及回交各世代的DNA含量進(jìn)行檢測(cè)日韩一区二区A片免费观看，以監(jiān)控遺傳物質(zhì)在不同材料間的流向，并從回交二代植株群體中篩選了兩個(gè)材料国产福利在线观看免费第一福利，具有和白菜差異不顯著的DNA含量无码特级毛片A片，可推斷其為核質(zhì)雜種。

That they are OPPOSED TO UNIONS BETWEEN MEMBERS OF DIFFERENT RACES and refer to their offspring in disparaging terms?

你們知道他們反對(duì)不同種族成員之間的融合并且用蔑視的詞匯來描述種族融合的后代嗎美美女一级A片视频？

This has no relation to the dispersal of the offspring.

但這與散播植珠無關(guān)日韩无码三级片免费观看。

Yet in tracing the history of this association, it certainly does not seem to have suggested itself to very early thought, but is rather the offspring of a comparatively late philosophy It is remarkable too that the "equality" of laws on which the Greek democracies prided themselves —— that equality which, in the beautiful drinking song of Callistratus, Harmodius and Aristogiton are said to have given to Athens-had little in common with the "equity" of the Romans.

但在探求這種聯(lián)想的來歷時(shí)，我們當(dāng)然還不能證明它是一種早期的思想欧美日韩性爱AAA视频，它只是比較后來的一種哲學(xué)的產(chǎn)物黄色网站在线看免费。，同時(shí)也必須注意，希臘民主政治用以夸耀的法律"平等"——這種平等国产东北老妓女视频在线，在卡利斯屈拉得斯（Galli -stratus）的美麗的酒歌中自拍视频最新日韩欧美，據(jù)說是哈馬笛斯和阿利斯托杰頓給予雅典人的——與羅馬人的"衡平"很少共同之處。

It thinks that the educational situation of peasant-worker's children is the offspring of current household register system and rural-urban dualization policy.

認(rèn)為農(nóng)民工子女上學(xué)問題從根本上說是現(xiàn)行的戶籍制度及城鄉(xiāng)二元化政策的產(chǎn)物欧美日韩美女1000。