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The 3-dimensional double helix structure of DNA, correctly elucidated by James Watson and Francis Crick. Complementary bases are held together as a pair by hydrogen bonds.
- Translation
A DNA transcription unit is composed, from its 3' to 5' end,...
- The structure
Georgina Ferry. On 25 April 1953, James Watson and Francis...
- Translation
31 paź 2023 · DNA has a double-helix structure, with sugar and phosphate on the outside of the helix, forming the sugar-phosphate backbone of the DNA. The nitrogenous bases are stacked in the interior in pairs, like the steps of a staircase; the pairs are bound to each other by hydrogen bonds.
7 paź 2024 · The double helix of DNA is characterized by two distinct grooves that spiral along its length: the major and minor grooves. These grooves arise due to the asymmetrical positioning of the sugar-phosphate backbones, creating spaces of varying widths.
Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs. Duplication of the genetic information occurs by the use of one DNA strand as a template for formation of a complementary strand.
17 mar 2022 · Watson and Crick proposed that the DNA is made up of two strands that are twisted around each other to form a right-handed helix, called a double helix. Base-pairing takes place between a purine and pyrimidine: namely, A pairs with T, and G pairs with C.
15 sty 2023 · In double stranded DNA, the guanine (G) base on one strand can form three H-bonds with a cytosine (C) base on another strand (this is called a GC base pair). The thymine (T) base on one strand can form two H-bonds with an adenine (A) base on the other strand (this is called an AT base pair).
9 paź 2019 · Georgina Ferry. On 25 April 1953, James Watson and Francis Crick announced 1 in Nature that they “wish to suggest” a structure for DNA. In an article of just over a page, with one diagram (Fig....