The Secret of Life教案

step 2 work in pairs and discuss the questions.
1. who do you look like, your mother or your father? explain how you resemble him / her.
2. who do you take after in your personality?
step 3 complete the sentences about the body with the words in the box.
cell   diseases  environment   gender  genetics   identical   twin
1. something that is found in all living things is a ________.
2.a ______ is one of two children born at the same time to the some mother.
3. __________ is the study of genes.
4. some __________ are inherited but not all of them.
5. the _______ of a child is is a boy or a girl.
6. twins who are _________ have exactly the same genes.
7. the ____________ as well as our genes makes us who we are.
答案: cell    twin   genetics   diseases   gender   identical   environment
step 4 discuss which characteristics you have inherited from your parents and which characteristics are formed by your environment.
use the words in the box.
eyesight eye color  gene  health  height  intelligence weight personality
cultural corner
read the passage and answer the questions.
how are the eloi and the morlocks different from each other?
the eloi live above ground, while the morlocks live underground; the eloi are small, beautiful and unable to do physical work, while the morlocks are strong and wicked. their appearance was very different, too. the eloi were hairy only on their heads, while the morlocks had hair down their backs, too. the morlocks’ eyes were grayish- red, while the elois’ yes were large and mild.

period two
content: reading and vocabulary（1）
step 1 read parts 1 and 2 of the passage and answer the questions.
1. why did watson and crick say, “we have discovered the secret of life”?
because they discovered dna and that is what genes are made of.
2. do you think storied a-d in part 2 are true? why?/ why not?
story a
dna testing was made a standard procedure in criminal investigations.
story b
using a technology called genetic engineering, a couple had a highly intelligent, good – looking baby.
story c
having been inserted an animal gene, mark won all his races.
story d
having been tested that the unborn child would have a terrible, inherited illness, the couple decided to get rid of it.
step 2 read part 3 of the passage and answer the questions.
1. what will genetic engineering help scientists to do in the near future?
insert new genes into people to create new characteristics.