英语翻译Some people find genetically altered superfoods hard to swallow What do you get when you cross a chicken with an apple?A daffodil with rice?A flounder with a tomato?These aren’t jokes waiting for a punch line.Believe it or not,combinati
英语翻译Some people find genetically altered superfoods hard to swallow What do you get when you cross a chicken with an apple?A daffodil with rice?A flounder with a tomato?These aren’t jokes waiting for a punch line.Believe it or not,combinati
英语翻译
Some people find genetically altered superfoods hard to swallow
What do you get when you cross a chicken with an apple?A daffodil with rice?A flounder with a tomato?These aren’t jokes waiting for a punch line.Believe it or not,combinations like these may make their way to your dinner table.There’s a brave new world of agriculture that has some people excited about new superfoods.Others are very nervous.
For thousands of years,farmers improved their crops by patiently crossbreeding plants that have good traits.They would take pollen from the sweetest melon plants and add it to the flowers of plants that produced the biggest melons to create new plants with melons that are both sweet and big.But crossbreeding doesn’t always work.Even when it does,it can take decades to get good results.
Now,thanks to advances in gene science,there are amazing shortcuts.Genes are the instructions inside cells that help determine what a living thing looks like:its size,its shape and countless other traits.
Using the new tools of genetic engineering,scientists can take a gene from one living thing and put it directly into another plant or animal.That way,says John Mount,professor of agriculture at the University of Tennessee,“you can make changes more precisely in a much shorter
period of time.”
Here’s how it works.First,scientists identify a gene that controls a desirable trait — for example,a protein in an Arctic flounder that helps the fish thrive in frigid waters.The scientists then use chemicals to cut and paste the flounder gene into the genes of tomato cells in a test tube.
The cells grow into a tomato plant.Then the plant is tested to see if the fish gene still works.Do its tomatoes resist the cold?Yes,they do!
Scientists believe the new techniques can create crops that are pest-proof,disease resistant and more nutritious.Researchers are working on rice that has an extra boost of vitamin A from a daffodil gene.The rice could help prevent blindness,even death,for millions of kids who don’t get enough vitamin A in their diet.
Are we making monster food?
Not everybody is convinced that pumping up our food with foreign genes is a good idea.Many people say these genetically modified,or GM,foods may end up harming the environment and humans.They fear that plants with new genes forced into them will accidentally crossbreed with
wild plants and create pesticide-resistant superweeds.They also say GM foods could carry genes that trigger allergies or other side effects.Already,there’s evidence that some GM corn crops may be harmful to the caterpillars that turn into monarch butterflies.
英语翻译Some people find genetically altered superfoods hard to swallow What do you get when you cross a chicken with an apple?A daffodil with rice?A flounder with a tomato?These aren’t jokes waiting for a punch line.Believe it or not,combinati
一些人发现转基因保健品令人难以置信
你得到了什么当你过一只鸡和一个苹果吗?水仙花之类饭?一个拼命挣扎,一份番茄吗?这些不是笑话等妙语.信不信由你,像这样的组合将使得的方式到您的饭桌.有一个崭新的世界农业,它有一些人兴奋的新保健品.有一些很紧张.
数千年来,农民杂交作物,以提高了耐心植物的优点.他们将采取的花粉从最甜美的瓜植物并且把它加到花的植物产生的最大的瓜来创造新的植物与瓜都是甜的,大.但是并不总是会杂交.即使当它到达后,它需要花费数十年的时间,取得了满意的效果.
现在,由于基因的进步科学方面,有惊人的捷径.基因是细胞内的指令帮助确定什么是一种有生命的东西看上去就像:它的大小、形状及数不清的其他的特点.
利用基因工程的新工具,科学家们可以从一个生物基因并把它直接进入另一株植物或动物.这样,约翰说装,教授在美国田纳西大学的农业,“你能不能把变得更准确的说是一个短得多
一段时间.”
这是它怎么工作.首先,科学家能找出了一种基因,这种基因控制心意可嘉,例如,一种蛋白质,在北极的挣扎,帮助鱼生长在寒冷的水域.科学家于是使用化学药品,比目鱼复制并粘贴基因插入基因中有番茄的试管.
这些细胞成长为一的番茄.那么这棵植物检验,看看鱼基因仍能发挥作用.做它的西红柿抗拒冷吗?是的,他们在办公室里工作.
科学家们相信其新技术可以创造农作物,pest-proof、抗病、更有营养.研究员正在进行水稻的士气维生素A从水仙花基因.大米可以帮助处理好公共关系.
楼主同学，这么长篇大论的翻译还不悬赏分，你当人家劳动不值钱啊？
你看楼上这位，一看就知道用翻译工具翻的狗屁不通