why cytosine and guanine have triple bond

Answers (1). Why does cytosine and guanine have 3 hydrogen bonds while adenine and thymine only have 2? window.location.href = jQuery(this).val(); This makes the cytosine-guanine bond stronger than the adenine-thymine bond in DNA (and the adenine-uracil bond in RNA) because the cytosine-guanine connection has one more hydrogen bond.  -- Guanine used in Cosmetic fields [2] In spite of the higher thermostability conferred to a nucleic acid with high GC-content, it has been observed that at least some species of bacteria with DNA of high GC-content undergo autolysis more readily, thereby reducing the longevity of the cell per se. [23], Several mammalian species (e.g., shrew, microbat, tenrec, rabbit) have independently undergone a marked increase in the GC-content of their genes. The complementary base of the cytosine is guanine, and it forms three hydrogen bonds to pair with guanine during the complementary base pairing in the DNA helix. The absorbance of DNA at a wavelength of 260 nm increases fairly sharply when the double-stranded DNA molecule separates into two single strands when sufficiently heated. In the DNA helix, the bases: adenine, cytosine, thymine and guanine are each linked with their complementary base by hydrogen bonding. Factory View



Select Page: Three hydrogen bonds create a stronger connection than two hydrogen bonds because number of hydrogen bonds directly effects the strength of the bond. Explain the importance of protecting the forest ecosystem with reference to the following:(20 marks) When it refers to a fragment, it may denote the GC-content of an individual gene or section of a gene (domain), a group of genes or gene clusters, a non-coding region, or a synthetic oligonucleotide such as a primer.

[3] Because of the thermostability of GC pairs, it was once presumed that high GC-content was a necessary adaptation to high temperatures, but this hypothesis was refuted in 2001. We specialize in manufacturing Guanine ( CAS No.  -- Guanine used in Acyclovir Intermediate [11] This results in the variations in staining intensity in chromosomes. [13][14], Within a long region of genomic sequence, genes are often characterised by having a higher GC-content in contrast to the background GC-content for the entire genome. To emphasize this difference, the base pairings are often represented as "G≡C" versus "A=T" or "A=U". [21] Because of the nature of the genetic code, it is virtually impossible for an organism to have a genome with a GC-content approaching either 0% or 100%. There are three bonds between the cytosine and Guanine molecules, as seen on the Education Portal. These GC-content changes are correlated with species life-history traits (e.g., body mass or longevity) and genome size,[17] and might be linked to a molecular phenomenon called the GC-biased gene conversion.[24]. [4] Even so, it has been shown that there is a strong correlation between the optimal growth of prokaryotes at higher temperatures and the GC-content of structural RNAs such as ribosomal RNA, transfer RNA, and many other non-coding RNAs. Eleza maudhui ya kifo katika riwaya ya chozi la heri? Products Adenine pairs with thymine with 2 hydrogen bonds. [15] This has been pointed to the fact that the stop codon has a bias towards A and T nucleotides, and, thus, the shorter the sequence the higher the AT bias. At C4 position, there is an amine group, and at C2 position there is a keto group, as shown in the figure. (c)biotechnology : 73-40-5 ) and D-Dihidro phenylglycine Sodium Dane Salt ( CAS No. A G:C base pair has three hydrogen bonds, because the exocyclic NH, at C2 on guanine lies opposite to, and can hydrogen bond with, a carbonyl at C2 on cytosine. These two nucleotides form a strong hydrogen bond found in both deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Clackamas Community College explains that two types of hydrogen... Three bonds between the cytosine and guanine, http://www.anrdachem.com/three-bonds-between-the-cytosine-and-guanine/. Guanine pairs with cytosine with 3 hydrogen bonds.This creates a difference in strength between the two sets of Watson and Crick bases.

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