CLONING

WHAT IS A CLONE?

• Human cloning is the creation of a genetically identical copy of a human.
• It is the artificial reproduction of an organism it dose not refer to the natural conception and delivery of identical twins.

IS IT POSSIBLE?

• Scientists have created cloned embryos from the cells of two adults ( embryos not a baby yet)

HOW DO THEY MAKE A CLONE?

• Cloned embryos are just one way scientists are seeking to create personalized stem cell therapies for people. Other labs have examined making replacement organs by transforming people's skin cells into stem cells using a cocktail of genes.

HOW DO THEY MAKE A CLONE?

• Does the recent cloned embryo research mean scientists can now create cloned people?

STEM CELLS

• Stem cells have the remarkable potential to develop into many different cell types in the body during early life and growth.

HOW DO THEY CREATE A CLONE?

• Stem cell experts say that's still a long way from being possible. It's difficult to get cloned embryos to survive until birth. Nobody has ever been able to make a cloned newborn monkey, for example. Scientists have made cloned sheep and dogs.

DOLLY THE SHEEP

• In this famous example of cloning, an ordinary cell was used to replace the nucleus of an egg cell, so all of Dolly’s cells had identical DNA to the one parent that donated the cell. This form of cloning produced a single genetically identical offspring.

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CLONEING PLANTS.

• Plants can make identical copies of themselves by asexual reproduction, for example by tubers and runners. Humans have been cloning plants for years and have recently started to develop techniques to clone animals. However, animal cloning raises ethical issues about how far humans should interfere in the production of new life.

ADVANTAGES AND DISADVANTAGES

• Advantage All the new plants are genetically identical – they will all have the desired characteristics.
• Advantage Organisms that are difficult or slow to breed normally can be reproduced quickly. Some plant varieties do not produce seeds, others have seeds that are dormant for long periods.

ADVANTAGES AND DISADVANTAGES

• Disadvantage :If a clone is susceptible to disease or changes in environment, then all the clones will be susceptible.
• Disadvantage :It will lead to less variation, and less opportunity to create new varieties in the future.

QUIZ

• Guess the words
• C-o-e-n-
• -o-ly t-e sh-e-
• St-m ce-l
• Em-ryos

QUIZ

• What was the first cloned animal ?
• A:Chris.p.bacon (the pig)
• B:Dolly the sheep
• C:Simon the rabbit

QUIZ

• True or false.) The somatic cell donor is not the one being cloned. A. True B. False

QUIZ

• True or false.) Dinosaurs are able to be cloned today. A. True B. False

QUIZ

• How many organisms are needed to clone? A. 10 B. 4 C. 23 D. 3 E. 15

QUIZ

• 1. Are there human clones walking around on earth today?
• A:yes
• B:no

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