What does the wonderful cloning teach us about the main things

"Wonderful Clones".

To illustrate "cloning", three methods of illustration are used: examples, interpretations, and citations (ps: no column numbers).

Examples: Give examples that are familiar to people in the plant and animal kingdoms to illustrate the difficult scientific knowledge in a concise and easy-to-understand way. (Sentence:.)

A bacterium can split into two in about 20 minutes; A grape branch cut into ten pieces can become ten grapes; The cactus is cut into several pieces, and each piece takes root when it lands; A strawberry plant relies on its stolons that "crawl away" along the ground, and hundreds of strawberry seedlings can grow ...... in a year）

Interpretation: Tracing the origin and interpretation of the term cloning. (Sentence:.)

All of these are the reproduction of offspring by the division of oneself into two or the expansion of a small part of oneself, which is called asexual reproduction. The English name for asexual reproduction is "clone", which is transliterated as "clone". In fact, the English word "clone" is derived from the Greek word "klone", which originally meant to be propagated with "shoots" or "cuttings".

Today, the meaning of "cloning" is not only "asexual reproduction", but also a group of individuals from an ancestor who reproduce asexually is also called "cloning". This group of asexual descendants from one ancestor is also called a "clonal breeding line", or clone for short. ）ps：

Please excerpt) Citation: The story of Sun Wukong plucking a handful of monkey hair and conjuring a large group of monkeys in "Journey to the West" vividly illustrates what "cloning" is all about. (Sentence:.)

It can be said that Wu Chengen, a great writer in the Ming Dynasty of China, has a wonderful description of the idea of cloning - Sun Wukong often plucks a handful of monkey hair at a critical moment to conjure up a large group of monkeys, and monkey fur becomes a cloned monkey. ）

Wonderful two: the "cuttings" of willow trees, the "cuts" of potatoes and cacti can breed offspring.

Wonder 3: Single-celled microorganisms such as bacteria "can be divided into two and then into four or eight ...... after 20 minutes."”

or 1, it is possible to breed domestic animals of good quality.

2. It can save endangered species and regulate the ecological balance of nature.

3. It can make human organs.

The text first introduces the meaning of cloning, then introduces the significance of the first cloned sheep cloned by British scientists in 1996, "Dolly", then introduces the benefits that cloning technology can use to benefit mankind, and finally writes that cloning technology has an attractive prospect.

We're going to use this text for an open class, so I'm gathering information.