Molly asked in 科學其他:科學 · 1 decade ago

clone無性繁殖(翻譯一下)~急

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何謂無性繁殖?

無性繁殖(asexual reproduction or cloning),意指科學家利用一隻動物的單細胞作繁殖之用。這個透過單一細胞技術培養成長的個體,跟其原生細胞的遺傳因子完全相同。換句話說,科學家在進行無性繁殖的過程中,保存了原本基因的組合,使基因的特性不受影響地遺傳到被複製的動物身上。

無性生殖分6種

1.分裂生殖:有的單細胞生物可以分裂成兩個新個體例如變形蟲.草履蟲

2.出芽生殖:母體生上會長出小小的新個體.等到長到與母體差不多大小時.就會脫離母體

例如水螅.酵母菌

3.斷裂生殖:有些生物遭到外力斷裂.斷裂會的片段都會自行發育成新個體

例如渦蟲.水綿

4.孢子生殖:菌類能產生大量的孢子.孢子散播出去又能長出菌絲.最後又能產生孢子

例如菌類.菇類.木耳.蕨類

5.營養器官繁殖:植物有的能以部分的器官長成一個新的個體.例如番薯的塊根.落地生根的葉...

6.生物技術:複製生物.將一個生物的卵細胞去掉細胞核加入其他細胞的細胞核.兩者融合便分裂發育成新胚胎。

影響:

若從長生不死的角度來論,這些複製動物的成功例子初步證明科學家已掌握了複製跟原生動物一模一樣的技術。倘若這種複製技術應用到人類身上,人類最終是可以長生不死的。這是當今的軍事強人、野心家、獨裁者和大富豪所樂聞的,他們今次可以彈冠相慶了。這些人大可以甘詞厚幣或以威迫利誘的手段來迫使精於此道的科學家為他們服務(美國在第二次世界大戰時,利用納粹德國的科學家替其研製原子彈便是一例)。當下社會各階層人士所關心的,卻不是人類最終是否可以透過這種方法來達致長生不死,大家所關心的是這種複製動物的技術一旦用在人類身上,將會對社會有什麼衝擊和啟示。

關於複製羊…

有兩個因素去思考為什麼她確實不是精確的、完全的像她的父母

首先, 即使她的全部染色體來自成年的綿羊,Dolly的mitochondrial DNA仍然來自蛋的捐助者。 Mitochondrial DNA 只來自母親; 此後它從未兼與父親的DNA結合,那能用來追蹤動物的發展。

第二,免疫系統基因在開始沒有足夠的發展空間。 基因在授精之後繼續重新結合。 因此無性繁殖將有與它的父母些微不同的免疫系統。

1 Answer

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  • 1 decade ago
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    What vegetative reproduction?

    The vegetative reproduction (asexual reproduction or cloning), Italy refers to the scientist to use an animal's single cell to make using of the reproduction. This penetration sole cell technology raise grows individual, with his/her protocyte gene quite same not less than. In other words, the scientist in carries on the vegetative reproduction in the process, has preserved originally the gene combination, causes the gene the characteristic not to affect inherits to on the animal body which duplicates. The asexual reproduction is divided 6 kinds

    1. Reproduction by fission: Some unicellular organisms may split two new individual for example distortions insect Paramaecium

    2. Reproduction by budding: The parent substance lives the association president to leave the small new individual When as is long as and the parent substance similar size Can be separated from the parent substance for example hydra Saccharomycetes

    3. Break reproduction: Some living thing encounter the external force break The break meeting fragment can voluntarily grow the new individual for example worl insect water line

    4. Sporogony: The fungus category can produce the massive spore The spore disseminates can be long Fungus Finally can have the spore for example fungus category Mushroom class Auricularia auricula ferns

    5. The vegetative organ reproduces: The plant has can grows into a new individual by the part organ For example sweet potato's block root Air plants leaf

    6. Biological technology: Duplication biology Removes the cell nucleus a living thing egg cell to join other cells the cell nucleus Two fusions then split grow the new embryo.

    何謂無性繁殖?

    無性繁殖(asexual reproduction or cloning),意指科學家利用一隻動物的單細胞作繁殖之用。這個透過單一細胞技術培養成長的個體,跟其原生細胞的遺傳因子完全相同。換句話說,科學家在進行無性繁殖的過程中,保存了原本基因的組合,使基因的特性不受影響地遺傳到被複製的動物身上。

    這是從無性生殖分6種

    .到~~~~兩者融合便分裂發育成新胚胎。

    2006-02-18 10:43:50 補充:

    Influence:

    If does not die from the immortal the angle theory, these duplication animals' successful examples initially proved the scientist has grasped the duplication with the protozoon entirely alike technology.

    影響到技術

    2006-02-18 10:44:58 補充:

    If this kind of duplication technology applies on the human body, the humanity finally is may the immortal not die. This is the now military strong person, the careerist, the dictator and big rich and powerful people Le Wen, their this was allowed to congratulate each other.倘若到..相慶

    2006-02-18 10:47:45 補充:

    The scientist which these National People's Congress may Gan Tz'uhou the coin or threatens by force which tempts with the promise of gain the method forces to be skilled in this field of endeavor for them to serve這些人..服務

    2006-02-18 10:48:46 補充:

    (US when Second World War, uses Nazi Germany scientist for its development atomic bomb then is an example).

    誇號內的

    2006-02-18 10:50:06 補充:

    The social various social strata public figure cares about immediately, actually is not the humanity whether finally may penetrate this method to attain the immortal not to die,當下..長生不死

    2006-02-18 10:50:50 補充:

    What everybody will care about is this kind of duplication animal's technology once uses on the human body, will be able to have any impact and the enlightenment to the society.

    大家..啟示

    2006-02-18 10:52:22 補充:

    About duplication sheep... Some two factors pondered why she truly isn't precise, the complete picture her parents, first, even if her complete chromosome comes from the grown-up sheep, Dolly mitochondrial DNA still came from egg donor.

    關於負制..捐住者

    2006-02-18 10:53:32 補充:

    Mitochondrial DNA only comes from the mother; Hereafter it never concurrently with father's DNA union, that will be able to use for to trace animal's development.

    重Mitochondrial到發展

    2006-02-18 10:54:19 補充:

    Second, the immunity system gene is starting not fully 夠 development space. Gene after impregnation continues reto unify. Therefore the vegetative reproduction will have with its parents slightly different immunity system.第二..系統!!完成

    Source(s): 這邊限兩千字,我打在下面
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