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characteristics of the donor egg. A skin cell from sheep A (containing a nucleus with
genetic material) was fused with the unfertilized egg from sheep B. The egg, now
with a full complement of genes, began dividing and was placed into the uterus of a
surrogate mother (sheep C). The embryo developed normally and was delivered
safely. Named Dolly, this healthy sheep was introduced to the world with much
fanfare in February 1997.
While Dolly has most of the genetic characteristics of sheep A, she is not a
true clone. Not all of an animal's genes are found in the cell's nucleus. There are a
few dozen genes that reside in the mitochondria outside the nucleus in the cell's
cytoplasm. In Dolly's case, some of these genes were supplied by the donor egg of
sheep B.
The creation of Dolly represents a unique advance for cloning technology, but
it inevitably intensified the debate about subjecting humans to cloning. Rather than a
prelude to human cloning, however, many scientists herald the achievement as the
forerunner of a revolution in animal breeding that will allow the highest quality farm
animals to be produced and will provide a cost-effective method of producing
medicines for human use. Cloning may also be used to create genetically altered
animals capable of providing major organs for surgical transplantation into human
beings.
2.2.6 Текст “The Future of Global Communications: We have seen the
Future and It is Wireless”
It’s another work and you’re on the 7:05 train whisking you at 190 miles an
hour into the big city. Your laptop displays the morning news, which is being beamed
directly from the wire services.
Suddenly, you hear a beep coming from your wrist pager. The verbal mode
kicks in and you hear an electronically synthesized voice telling you to send the facts
concerning this morning’s new business proposal. From your pocket you pull out
your personal cellular telephone and say, “Call my boss.” Automatically, it dials his
personal communicator. You tell him that the requested data will be immediately
faxed. Then you plug your cellular phone into your lap computer, your boss is
reading the facts.
A few minutes later, another message from your boss beeps in, thanking you
for the information and asking you to meet him downtown at the Express port.
It was published more then ten years ago and sounded like a page out of the
future? Maybe so, but what may sound like tomorrow’s technology is here today.
Right now, we’re in the midst of a communication revolution. In addition, the
revolution is wireless.
The freedom that a wireless system of communication affords will have a
limitless affect on every aspect of one’s life. The wires that tied people to one
location ever since Alexander Graham Bell invented the telephone have been cut by
advanced technology. They are being replaced by high frequency radio technology
and ultra-sophisticated phone switching devices. Combine that with custom designed
characteristics of the donor egg. A skin cell from sheep A (containing a nucleus with genetic material) was fused with the unfertilized egg from sheep B. The egg, now with a full complement of genes, began dividing and was placed into the uterus of a surrogate mother (sheep C). The embryo developed normally and was delivered safely. Named Dolly, this healthy sheep was introduced to the world with much fanfare in February 1997. While Dolly has most of the genetic characteristics of sheep A, she is not a true clone. Not all of an animal's genes are found in the cell's nucleus. There are a few dozen genes that reside in the mitochondria outside the nucleus in the cell's cytoplasm. In Dolly's case, some of these genes were supplied by the donor egg of sheep B. The creation of Dolly represents a unique advance for cloning technology, but it inevitably intensified the debate about subjecting humans to cloning. Rather than a prelude to human cloning, however, many scientists herald the achievement as the forerunner of a revolution in animal breeding that will allow the highest quality farm animals to be produced and will provide a cost-effective method of producing medicines for human use. Cloning may also be used to create genetically altered animals capable of providing major organs for surgical transplantation into human beings. 2.2.6 Текст “The Future of Global Communications: We have seen the Future and It is Wireless” It’s another work and you’re on the 7:05 train whisking you at 190 miles an hour into the big city. Your laptop displays the morning news, which is being beamed directly from the wire services. Suddenly, you hear a beep coming from your wrist pager. The verbal mode kicks in and you hear an electronically synthesized voice telling you to send the facts concerning this morning’s new business proposal. From your pocket you pull out your personal cellular telephone and say, “Call my boss.” Automatically, it dials his personal communicator. You tell him that the requested data will be immediately faxed. Then you plug your cellular phone into your lap computer, your boss is reading the facts. A few minutes later, another message from your boss beeps in, thanking you for the information and asking you to meet him downtown at the Express port. It was published more then ten years ago and sounded like a page out of the future? Maybe so, but what may sound like tomorrow’s technology is here today. Right now, we’re in the midst of a communication revolution. In addition, the revolution is wireless. The freedom that a wireless system of communication affords will have a limitless affect on every aspect of one’s life. The wires that tied people to one location ever since Alexander Graham Bell invented the telephone have been cut by advanced technology. They are being replaced by high frequency radio technology and ultra-sophisticated phone switching devices. Combine that with custom designed 85
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