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A-Level Biology OCR A

Animal Scnt Enables Offspring Embryos Artificial Twinning Produce

This flashcard outlines the arguments for and against animal cloning. The benefits include increased production of desirable farm animals and potential for preserving endangered or extinct species. The drawbacks highlight inefficiency, health issues in clones, and limited success in species preservation.

This flashcard outlines the arguments for and against animal cloning. The benefits include increased production of desirable farm animals and potential for preserving endangered or extinct species. The drawbacks highlight inefficiency, health issues in clones, and limited success in species preservation.

Front Describe the arguments for and against animal cloning.
Back Evaluating animal cloning:

For
  • Artificial twinning enables high yielding farm animals to produce more offspring than normal reproduction
  • Artificial twinning enables success of the male animal at passing on desirable genes to be determiend (if first cloned embryo results in successful breeding animal, more identical animals can be reared from remaining froen ones)
  • SCNT enables GM embryos to be replicated and to develop, giving many embryos from one engineering procedure - important in pharming
  • SCNT enables scientists to clone specific animals (specific pets)
  • SCNT has potential to enable rare, endangered or extinct animals to be reproduced
Against
  • SCNT is very inefficiant - takes many eggs to produce single offspring
  • Many cloned animal embryos fail to develop and miscarry due to malformed offspring
  • Many animal clones have shortened lifespans
  • SCNT has been relatively unsuccessful in increasing populations of rare organisms or allowing extinct species to be brought back to life

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