国产精品永久免费视频- 无码精品A∨在线观看中文 -热re99久久精品国产99热-国产成人久久777777

免費訂閱 退訂周刊
 

Scientists: Chicks before eggs

研究表明先有雞后有蛋

 

Scientists: Chicks before eggs<BR>研究表明先有雞后有蛋

 

 

 

 

British scientists have solved the ancient riddle of which came first - chicken or egg? The answer, they say, is the chicken. Researchers found that the formation of egg shells relies on a protein found only in a chicken's ovaries, according to The Sun of London. That means eggs have to be formed in chickens. The protein, called ovocledidin-17 (OC-17), speeds up the development of the shell.(See photo)

 

 

 

 

 

據英國《太陽報》報道,困擾人類的千古之謎"雞生蛋還是蛋生雞"終于有了答案。英國科學家稱:先有雞后有蛋。研究人員發現,蛋殼只有在一種蛋白質的催化下才能形成,而這種物質只存在于雞的卵巢內。因此,一定是雞生蛋。這種名叫OC-17的蛋白質能夠加速蛋殼的形成。(見圖)

 

 

 

 

 

*以上新聞由 ChinaDaily雙語手機報提供

 

 

 

 

 
  > Cat gets knee replacement
小貓車禍后裝假肢(圖)
 
  > That's not Tiger Woods
伍茲性癮治療照疑造假
 
  > Ogling beauty lengthens life
研究:男士多看美女延壽
 
  > Did apple hit Newton's head?
牛頓被蘋果砸頭屬杜撰?
 
  > Blondes are more aggressive
研究:金發美女天生好斗
 
  > Sleep-talk an Internet hit
英國男子夢話笑翻網絡
 
  > Divorce formula invented
美研究總結出離婚公式
 
  > Chimp celebrates 5th birthday
皖黑猩猩慶生'男友'助興
 
more  
 




 
進入首頁 | 退訂 | 訂閱 | 聯系我們
 
本欄目文字內容《中國日報》所有,任何單位及個人未經許可,不得擅自轉載使用。