Cloning Mammals

  • Created by: alexda
  • Created on: 20-02-15 18:51
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  • Cloning Mammals
    • Cloning is a type of asexual reproduction that produces cells that are genetically identical to an original cell.
    • Adult cell cloning involves extracting an unfertilised egg cell and removing its nucleus.
    • Cloning has many uses including:
      • Cloning can be used to help protect and preserve endangered species from extinction.
      • The study of animal clones could lead to greater medical understanding of the development of the embryo and of ageing and age related disorders.
      • Cloning mammals could help with shortage of organ donors and transplants.
    • However, there are many risk as well as benefits to cloning mammals including:
      • The rate of successful cloning very low, genetic defects are common and those animals which survive the cloning procedure are often unhealthy and are much more susceptible to disease.
      • Cloning mammals inevitably produces a reduced gene pool whereas sexual reproduction provides genetic variety.
        • The limited pool of alleles which make up chromosomes can make the species more susceptible to a contracted disease and other conditions such as premature aging, organ and immune system failures
      • Clones have a very low life expectancy rate.
    • 1. A nucleus is extracted from an adult body cell. This is a diploid nucleus containing the full number of chromosomes.


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