UC知道初三生物...英语的
来源：百度知道 编辑：UC知道 时间：2024/05/25 10:02:26
1） Describe about genes.
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2） What do you understand by acquired characters? Does environment have any role for these characters?
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3） What is genetic variation? Explain the mechanism behind this.
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4） List some human characteristics that are affected by the environment, and explain how they might be affected.
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5） Discuss about the natural selection with a suitable example.
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6） What is artificial selection? Give an example in animal breeding.
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7） Some people say that selective breeding can weaken the species because it reduces the gene pool. Find out what this means and say whether you agree with the statement.
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8） What is meant by selective pollination? How is it done?
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9） What do you understand by diploid and haploid cells?
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知道答案的说哇~~~（不是翻译~~是要题目的答案~~英文）
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2） What do you understand by acquired characters? Does environment have any role for these characters?
-----
3） What is genetic variation? Explain the mechanism behind this.
-----
4） List some human characteristics that are affected by the environment, and explain how they might be affected.
-----
5） Discuss about the natural selection with a suitable example.
-----
6） What is artificial selection? Give an example in animal breeding.
-----
7） Some people say that selective breeding can weaken the species because it reduces the gene pool. Find out what this means and say whether you agree with the statement.
-----
8） What is meant by selective pollination? How is it done?
-----
9） What do you understand by diploid and haploid cells?
-----
知道答案的说哇~~~（不是翻译~~是要题目的答案~~英文）
1.a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity; "genes were formerly called factors"
只知道这个...
话说现在初三的东西怎么会这么难...难为你们了...