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This page is currently being authored by an undergraduate researcher at Penn State Brandywine. This page will be posted before the end of November 2015.

De- extinction is the process of creating an organism which is or greatly resembles a member of an extinct species. De- extinction requires an in-depth study of the biophysical conditions where the species can live and reproduce in relation to other species, including humans and adapt to environmental changes [1]. There are some pros and cons when it comes to de-extinction and bring back species. There are ways in which de-extinction can occur and that would be by cloning. The woolly mammoth is in the front running to the species to bring back, followed by the passenger pigeon.


Cloning is one of the main methods to bringing back these extinct animals. It takes extensive research, highly trained professionals and the best technology.


Cloning relies heavily on genetic engineering and technology and the use of DNA synthesizing. [1] Scientists believe that they have the type of technology to bring back species that have been extinct. Cross-species cloning is using a mammal that is closely related to the other animal. The scientists can use donor cells to transfer genetic material from one cell to another. The procedure used to produce cloning animals involves several steps and highly trained professionals. The first step is to identify a suitable nuclear donor cell in which to clone. Skin cells are often used to extract the DNA to put into those donor cells.[2]

The Debate

Many scientists and researches are in a debate on whether to bring back these extinct animals. There are many pros and cons, with un-answered questions if we do bring them back. De-extinction has raised a number of ethical and political questions: Will it divert resources from other tried and true measures for conservation?


Some people and scientists believe that it is our responsibility to bring back these extinct animals, because we are the ones who made them extinct. Many scientists also believe that introducing these new species will help with genetic variation and start to introduce new species all together in the future [3].


There are many concerns from scientists and researchers when it comes to bringing back these animals. Some of these concerns are resource allocation, species identification and classification, and the relationship between technology and nature preservation [4]. Some fear that the re-created species may become vectors or reservoirs for viruses [1]. There is no evidence or research to show that bringing back these animals will not cause harm to other species or even humans. There could also be pregnancy concerns when it comes to the surrogates carrying these engineered animals. Those animals are called the “mother” animal. There could be abnormalities to the newborn, which could cause some problems seeing how we don’t know what kind of personalities these new animals could bring and how they would react with other animals [2]. There is debate about the constant changing environment that can effect these animals who are used to a cold climate all year round [3]. This could be a problem seeing how our planet keeps getting warmer.

See also

Other closely related articles in this wiki include:



External links

Add any other relevant external links in the section.

  • Martinelli, L., Oksanen, M., & Siipi, H. (2014). De-extinction: a novel and remarkable case of bioobjectification. Croatian Medical Journal, 55(4), 423–427.[1] Accessed October 29, 2015
  • Whaley, J., 2017, Oil in the Heart of South America,], accessed November 15, 2021.
  • Wiens, F., 1995, Phanerozoic Tectonics and Sedimentation of The Chaco Basin, Paraguay. Its Hydrocarbon Potential: Geoconsultores, 2-27, accessed November 15, 2021;
  • Alfredo, Carlos, and Clebsch Kuhn. “The Geological Evolution of the Paraguayan Chaco.” TTU DSpace Home. Texas Tech University, August 1, 1991.