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DNA

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英英释义考试真题实用场景例句

abbr. 脱氧核糖核酸（deoxyribonucleic acid）；（美国）国防部核子局（Defense Nuclear Agency）

CET4中频词常用词汇

英英释意

1. (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information;: "DNA is the king of molecules"

英文词源

DNA (n.): 1944, abbreviation of deoxyribonucleic acid (1931).

考试真题

Some communities have agreed to share online—geneticists, for example, post DNA sequences at the GenBank repository ( ' , 库), and astronomers are accustomed to accessing images of galaxies and stars from, say, the Sloan Digital Sky Survey, a telescope that has observed some 500 million objects—but these remain the exception, not the rule.

Some communities have agreed to share online—geneticists, for example, post DNA sequences at the GenBank repository 库, and astronomers are accustomed to accessing images of galaxies and stars from, say, the Sloan digital Sky Survey, a telescope that has o

Yet most ancestry testing only considers a single lineage, either the Y chromosome inherited through men in a father’s line or mitochondrial DNA, which a passed down only from mothers.

This means that a DNA database may differ depending on the company that processes the results.

This DNA can reveal genetic information about only one or two ancestors, even though, for example, just three generations back people also have six other great-grandparents or, four generations back, 14 other great-great-grandparents.

More than two dozen companies sell DNA tests Directly to the public , ranging in price from a few hundred dollars to more than $2500.

DNA testing is also the latest rage many passionate genealogists-and supports businesses that offer to search for a family's geographic roots.

All tests require a potential candidate with whom to compare DNA.

Companies are unlikely to file many more patents for human DNA molecules - most are already patented or in the public domain.

Companies had won patents for isolated DNA for decades-by 2005 some 20% of human genes were patented.

DNA testing is also the latest rage among passionate genealogists—and supports businesses that offer to search for a family's geographic roots.

girls' attraction to pink may seem unavoidable, somehow encoded in their DNA, but according to Jo Paoletti, an associate professor of American Studies, it is not.

In October the Department of Justice filed a brief in the Myriad case, arguing that an isolated DNA molecule "is no less a product of nature... than are cotton fibres that have been separated from cotton seeds."

More than two dozen companies sell DNA tests directly to the public, ranging in price from a few hundred dollars to more than $2500.

This means that a DNA database may have a lot of data from some regions and not others, so a person's test results may differ depending on the company that processes the results.

Yet most ancestry testing only considers a single lineage, either the Y chromosome inherited through men in a father's line or mitochondrial DNA, which is a passed down only from mothers.

实用场景例句

DNA fingerprinting has proved the clincher in this investigation.: 在这次调查中，DNA指纹鉴定起了决定性的作用。

DNA profiling has aided the struggle against crime.: DNA分析对于打击犯罪有所帮助。

They act at least a temporary block to DNA synthesis in micro - organisms.: 它们在微生物中至少对DNA合成起暂时性的阻止作用.

Gene mutations are alterations in the DNA code.: 基因突变是指DNA密码的改变.

Proteins and DNA are polymers.: 蛋白质和脱氧核糖核酸都是聚合体.

Genetic abnormalities are more often associated with faults in paternal DNA than in maternal DNA.: 相对于母本DNA，基因畸变往往更多地与父本DNA上的缺陷相关。

DNA is the genetic material inside every cell that carries the blueprints for everything from hair color to the risk of cancer.: 脱氧核糖核酸是存在于每个细胞内的基因物质，它承载从头发颜色到致癌风险等各种遗传型板。

So, just before Thanksgiving, Carvin set off on a DNA - induced family reunion.: 为此, 在感恩节前, 卡文奔赴由DNA推出的家族聚会.

Andy Canvin is a pioneer on the strange frontier of DNA genealogy.: 安迪-卡文是DNA谱系学奇异前沿的先锋人物.

They act at least a temporary block to DNA synthesis in microorganisms.: 它们在微生物中至少对DNA合成起暂时性的阻止作用。

In early tests , DNA - based vaccines triggered both responses.: 早期检测期间, DNA疫苗能激起双重反应.

Microbodies might possess their own DNA and have some degree of autonomy.: 微体可能有其自身的DNA并有一定程度的自主性.

Geminiviruses are the only other group of plant DNA viruses known.: 双联病毒是已知的唯一另一组植物DNA病毒.

Ribose and deoxyribose are constituents of the nucleic acids RNA and DNA.: 核糖与脱氧核糖分别是核糖核酸与脱氧核酸(DNA)的结构成分.

The DNA of chromatin must replicate before cell division.: 染色质DNA在细胞分裂之前必须复制.