The A form and Z form DNA are not the natural conformation of DNA.
错误
举一反三
- The B form DNA is the only natural conformation of DNA.()
- The DNA structure exists in three forms: __________________. A: A form B: B form C: C form D: Z form
- ( ): The natural coiled conformation of two complementary, antiparallel DNA chains.
- In 1953, Watson and Crick found that: A: Two polynucleotide chains form double helix structure of DNA by hydrogen bond linkage B: DNA replication is semi-conservative and usually form heteroduplex DNA consisted of one parental chain and one daughter chain C: Three continuous nucleic acids consist of a genetic code D: Genetic material is usually DNA instead of RNA
- In order to package the 3x109 nucleotides of DNA into the nucleus, the DNA is wound around histones. These are proteins that bind to the DNA. The interaction of histones and DNA involves:
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(+)DNA即是与mRNA序列互补的DNA.
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DNA存在于人类（）及（）中。形成（）物质，分别称为（）（核内DNA.和线粒体DNA（核外DNA.，二者的遗传规律不同。它们没有组织特异性，但有（）和（）。
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(+)DNA即是与mRNA序列互补的DNA. A: 正确 B: 错误
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___________is the related attribution of human form and characteristics to abstract concepts such as nations, emotions and natural forces like seasons and the weather.
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（）natural resources it is one of the poorest countries in Western Europe. A: In the form of B: By means of C: In terms of D: On the basis of