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B2.8 cloning


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B2.8 cloning

  1. 1. Cloning WALT: To understand how organisms are cloned and to consider the ethical issues behind this. WILF: ~ Recall that cloning involves asexual reproduction. (E/D) ~ Describe how plant cuttings can be cloned. (C) ~ Discuss the advantages, disadvantages and possible problems with cloning mammals. (B) ~ Explain the process of how mammals can be cloned. (B) ~ Explain with reference to mitosis why clones are genetically identical. (A/A*) Keywords asexual reproduction clone implanted enucleated
  2. 2. How do you clone plants? Asexual reproduction.
  3. 3. How do you clone a mammal?
  4. 4. Cloning mammals Dolly the sheep was the first large mammal to be produced in 1996. However it did take 237 cloning attempts and Dolly died relatively young in 2003. CopyCat is the only surviving clone following 87 attempts.
  5. 5. Your task… …is to produce a poster showing the arguments for and against cloning. Checklist ~ a definition of cloning ~ how plants can be cloned? ~ advantages and disadvantages of cloning mammals ~ your opinion on cloning
  6. 6. Describe the stages involved in cloning a mammal. (3m) ~ Nucleus from cell of wanted clone is transferred into enucleated egg cell. ~ The egg cell is the stimulated to start mitosis ~ Embryo grows and is placed into the uterus of a surrogate mother