cloning-and-DNA.ppt

1、,Cloning,Module 5 Cloning and DNA,Work in pairs. Look at the title of the passage and the words in the box. Decide which ones youre likely to see.,acid bacteria embryos enzyme experience gene human tissue organism plant psychological stem cell structure upbringing,Revision,technical terms,基因 gene 酸性

2、的 acid 细菌 bacteria 胚胎 embryo 酶 enzyme 组织 tissue 有机体 organism 干细胞 stem cell 基因的，遗传学的 genetic 生物多样性的 biodiversity,Work in pairs and answer the questions. What is_?,1. DNA,the fundamental component of life,Scannig:,2. a clone,an organism which is genetically identical to another,3. a stem cell,4. the g

3、enetic make-up of a person or a plant,a cell that can develop into every other type of cell,the particular genes that give a person their physical characteristics,5. bacteria,very small organisms that cause diseases,chemicals formed in the body,6. an enzyme,Detailed reading,I. Para. 1 -Para. 3,Mende

4、l,Watson and Crick,Cohen and Boyer,both parent plants have influenced the genetic make-up of the new plant,The structure of acid DNA,A procedure to use enzymes to unzip the DNA, to cut out a sequence of genes and finally insert them into the host cell and combine with its DNA,Read the passage and fi

5、nd the paragraphs which describe:,1. when the structure of DNA was discovered 2. how to clone something 3. four possible reasons for cloning 4. the disadvantages of cloning 5. the research into DNA has helped solve crime 6. Cohen and Boyer discovered a procedure,P1,P3,P4-7,P4-7,P8,Fast reading,P2,P1

6、 (DNA and gene),P3 (cloning),P8 (DNA in helping solve crime),P4-7 (advantages and disadvantages),Structure of the passage,P2 (procedure),a transparent twisting ladder,made of the fundamental components of life,DNA,Intensive reading,1.Please describe the structure of DNA. 2.What is the relationship b

7、etween DNA and gene?,P1,Gene is part of DNA that controls how it develops,relationship,Intensive reading,P2,Please describe the procedure which Cohen and Boyer discovered.,use enzymes to cut out and to insert and combine,to Unzip the DNA,a sequence of genes,them into the host cell,with its DNA,What

8、is a Clone?,A clone is an organism which is genetically identical to another one.,But remember We= Our genes + Our environment,Intensive reading,P3,optional,contradictory,flexible,unacceptable,handy,P4-7,restrict,pressure,talents,Read the text again and decide whether the following statements are tr

9、ue (T) or false (F). The science of genetics was discovered by two scientists, Watson and Crick at Cambridge University. ( ) 2. Stem cells in embryos can help someone recover from a disease, repair human tissue and so on. ( ),F,T,3. The child who was a clone of one of his parents would have psycholo

10、gical pressure throughout his childhood. ( ),T,2. A pattern of chemicals within the cell of a living thing that controls what it is like,According to the definition, find the proper words.,Words revision:,thin enough to be seen through,gene,transparent,3. The same or exactly alike 4. Be likely to cause argument or disagreement 5. Can be chosen freely 6. Bad habit or personal quality 7. Can change or be changed to adapt to new needs,identical,controversial,optional,vice,flexible,8. Put into force by orders or by the law 9. Useful or simple to use 10. The natural watery liquid produced in