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1、會(huì)計(jì)學(xué)1新人教選修八新人教選修八Unit Warming upWarming upWarming up1.How much do you know about clone? What is clone? It is a way of making an exact copy of another animal and plant. 第1頁(yè)/共10頁(yè)1. Do you want to be cloned or not? Why?克隆克隆”一詞源于一詞源于“Clone”Clone”的音譯,指的音譯,指的是人工誘導(dǎo)動(dòng)、植物的無性繁殖過程,的是人工誘導(dǎo)動(dòng)、植物的無性繁殖過程,這門生物技術(shù)就叫克隆技術(shù)。
2、無性繁殖這門生物技術(shù)就叫克隆技術(shù)。無性繁殖是指不經(jīng)過雌雄兩性生殖細(xì)胞的結(jié)合,是指不經(jīng)過雌雄兩性生殖細(xì)胞的結(jié)合,只由一個(gè)生物體產(chǎn)生后代的生殖方式,只由一個(gè)生物體產(chǎn)生后代的生殖方式,如:由植物的根、莖、葉等經(jīng)過壓條或如:由植物的根、莖、葉等經(jīng)過壓條或嫁接等方式產(chǎn)生新個(gè)體。綿羊、猴子和嫁接等方式產(chǎn)生新個(gè)體。綿羊、猴子和牛等動(dòng)物沒有人工操作是不能進(jìn)行無性牛等動(dòng)物沒有人工操作是不能進(jìn)行無性繁殖的。繁殖的。 第2頁(yè)/共10頁(yè)2. Do you want to be cloned or not Why?3. 3. In pairs, look at these In pairs, look at these
3、 pictures and discuss which pictures and discuss which ones are natural clones and ones are natural clones and which ones are man-made. which ones are man-made. Explain how they differ.Explain how they differ.第3頁(yè)/共10頁(yè)the twins are natural clones The twins were born at the same time 第4頁(yè)/共10頁(yè)Dolly是世界上第是世界上第一例用體細(xì)胞一例用體細(xì)胞乳腺上皮細(xì)胞乳腺上皮細(xì)胞,通通過細(xì)胞核移植技過細(xì)胞核移植技術(shù)術(shù),在復(fù)雜的人工在復(fù)雜的人工操作下操作下,得到的一得到的一只小綿羊只小綿羊 。第5頁(yè)/共10頁(yè)一株草莓依靠它沿地一株草莓依靠它沿地“爬走爬走”的匍匐的匍匐莖莖,一年內(nèi)就能長(zhǎng)出數(shù)百株草莓苗一年內(nèi)就能長(zhǎng)出數(shù)百株草莓苗第6頁(yè)/共10頁(yè)富貴竹插枝即活富貴竹插枝即活仙人掌每塊落地就生根仙人掌每塊落地就生根第7頁(yè)/共10頁(yè)第8頁(yè)/共10頁(yè)第9頁(yè)/共10頁(yè)