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PTE Academic speaking read aloud sample passages 24

PTE Academic speaking read aloud sample passages

PTE Academic speaking read aloud sample passages.Look at the text below. In 40 seconds, you must read this text aloud as naturally and clearly as possible.

PTE Academic speaking read aloud sample passages | Cloning samples

1.In recent years, the method has adapted to fit the species or the situation. The DNA in the nucleus of a single organism holds all the genetic information needed to clone a species. Cloning is about accessing that nucleus and introducing it to stem cells, which are blank cells that copy the information they are given. Meaning that once a nucleus from another animal is introduced to a blank stem cell, it will start to generate the cells needs to make that animal. This method is called Somatic Nuclear Transfer (SNT). There are other ways to clone as well, but SNT creates the purest clones.

2.With advancing technology, cloning will continue to grow and improve. The hope is that cloning can save animals that are close to extinction. All is not rosy in the world of cloning, however. Conservationists, for example, believe that the money spent on cloning should go into protecting the animals that are still alive. In the case of the northern white rhino, conservationists point out that the problem of poaching needs to be solved before more rhinos are made; the animals have been hunted to near extinction for their extremely valuable horns, which are sold on the black market.

3.Trepidation over humans creating duplicate people began in February 1997 when Dr. Ian Wilmut and his team of scientists in Scotland astonished the world by announcing that they had successfully cloned an adult sheep. Animals had been cloned before using the cells of developing embryos soon after they begin to form in the egg, but this was the first time ever that a mammal had been cloned from the cells of an adult animal. This major scientific breakthrough was accomplished by researchers in Edinburgh at the Roslin Institute, a center for genetic research of farm animals and PPL Therapeutics, a biotechnology company.

PTE Academic speaking read aloud sample passages

4.The same procedure used to make a carbon copy of the sheep is also theoretically applicable to cloning human beings, many ethical and philosophical questions have been raised. The thought of replicating humans is frightening and most scientists, including Dr. Wilmut and his coworkers, believe that it would be unethical to try to clone humans. Cloning people is banned in Britain, Belgium, Denmark, Germany, The Netherlands, and Spain.

5.A breakthrough in human cloning takes place in 2013 when scientist Shoukhrat Mitalipov and his colleagues are able to make advancements in stem cell cloning. Stem cells are extremely useful to the body because they have the ability to adapt and become whatever the body needs them to become. Mitalipov used “somatic cell nuclear transfer” to make human embryos that can be a source of embryonic stem cells.

6.Society has always been alarmed by the appearance of new reproductive technologies. In the early 1970s, scientists discovered how to clone a gene from one organism and transplant it into the DNA of a different species where it would replicate along with the host DNA. The technique, called recombinant DNA, or “gene splicing,” created a furor at the time, and people feared that scientists would create dangerous microorganisms that might escape from the laboratories and destroy us.

PTE Academic speaking read aloud sample passages


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