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安裝中文字典英文字典辭典工具!
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- 脱氧核糖核酸 - 维基百科，自由的百科全书
The Path to The Double Helix: Discovery of DNA, first published in October 1974 by MacMillan, with foreword by Francis Crick; ISBN 978-0-486-68117-7; the definitive DNA textbook, revised in 1994, with a 9 page postscript
- 脱氧核糖核酸_百度百科
脱氧核糖核酸（英文DeoxyriboNucleic Acid，缩写为DNA）是生物细胞内含有的四种生物大分子之一核酸的一种。 DNA是生物细胞内携带有合成RNA和蛋白质所必需的遗传信息的一种核酸，是生物体发育和正常运作必不可少的生物大分子。
- DNA | Definition, Discovery, Function, Bases, Facts, Structure . . .
DNA is an organic chemical of complex molecular structure found in all prokaryotic and eukaryotic cells It codes genetic information for the transmission of inherited traits
- Scientists stunned by ‘fundamentally new way’ life produces DNA
For decades, biology textbooks have enshrined a simple rule: DNA is made by copying a template After one enzyme unzips a DNA double helix into separate strands, another called a polymerase builds a complementary sequence, base by base, for each strand Presto: two copies of the original DNA
- DNA and Evolution - The Smithsonians Human Origins Program
DNA’s double helix (which looks like a twisted ladder) is made of units called nucleotides Each nucleotide consists of a phosphate, sugar, and base The phosphates and sugars form the sides of the ladder, while the bases form the rung
- DNA structure and function - Khan Academy
Chromosomal DNA consists of two DNA polymers that make up a 3-dimensional (3D) structure called a double helix In a double helix structure, the strands of DNA run antiparallel, meaning the 5’ end of one DNA strand is parallel with the 3’ end of the other DNA strand
- Introduction: What is DNA? | Learn Science at Scitable - Nature
Introduction: What Is DNA? Deoxyribonucleic acid, more commonly known as DNA, is a complex molecule that contains all of the information necessary to build and maintain an organism
- DNA: Properties, Structure, Composition, Types, Functions
Deoxyribonucleic acid (DNA) is the heredity material found in humans and all living organisms It is a double-stranded molecule and has a unique twisted helical structure
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