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Bok

John Parrington

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  • Forventet leveringstid
    8-14 Arbeidsdager
  • Selges og sendes av Adlibris
  • Naturvitenskap, Kjemi, Biologi, Sosiologi
  • Bok
  • Heftet
  • English
  • John Parrington
Since the birth of civilisation, human beings have manipulated other life-forms. We have selectively bred plants and animals for thousands of years to maximise agricultural production and cater to our taste in pets. The observation of the creation of artificial animal and plant variants was a key stimulant for Charles Darwin's theory of evolution. The ability to directly engineer the genomes of organisms first became possible in the 1970s, when the gene for human insulin was introduced into bacteria to produce this protein for diabetics. At the same time, mice were modifiedto produce human growth hormone, and grew huge as a result. But these were only our first tottering steps into the possibilities of genetic engineering.In the past few years, the pace of progress has accelerated enormously. We can now cut and paste genes using molecular scissors with astonishing ease, and the new technology of genome editing can be applied to practically any species of plants or animals. 'Mutation chain reaction' can be used to alter the genes of a population of pests, such as flies; as the modified creatures breed, the mutation is spread through the population, so that within a few generations the organism is almostcompletely altered. At the same time, scientists are also beginning to synthesize new organisms from scratch.These new technologies hold much promise for improving lives. Genome editing has already been used clinically to treat AIDS patients, by genetically modifying their white blood cells to be resistant to HIV. In agriculture, genome editing could be used to engineer species with increased food output, and the ability to thrive in challenging climates. New bacterial forms may be used to generate energy. But these powerful new techniques also raise important ethical dilemmas and potential dangers,pressing issues that are already upon us given the speed of scientific developments. To what extent should parents be able to manipulate the genetics of their offspring - and would designer babies be limited to the rich? Can we effectively weigh up the risks from introducing synthetic lifeforms intocomplex ecosystems? In this extensively revised paperback edition, John Parrington explains the nature and possibilities of these new scientific developments, which could usher in a brave, new world. We must rapidly come to understand its implications if we are to direct its huge potential to the good of humanity and the planet.
Sjanger:
Naturvitenskap
Kjemi
Biologi
Sosiologi
Formater:
Bok
EAN:
9780198766834
Publisher:
Oxford University Press
Innbindning:
Heftet
Språk:
English
ISBN:
9780198766834
Læremiddel:
0
Størrelse:
384
Forfatter:
John Parrington

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