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HPRT catalyzes a reaction that is necessary to prevent the buildup of uric acid, a nitrogenous waste product that is ordinarily excreted from the body through the kidneys. A severe mutation in the HPRT gene leads to an absence of HPRT enzyme activity =

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Hypoxanthine is a naturally occurring purine derivative. It is occasionally found as a constituent of nucleic acids, where it is present in the anticodon of tRNA in the form of its nucleoside inosine. It has a tautomer known as 6-hydroxypurine. Hypoxanthine is a necessary additive in certain cell, bacteria, and parasite cultures as a substrate and nitrogen source. Hypoxanthine is also a spontaneous deamination product of adenine. Because of its resemblance to guanine, the spontaneous deamination of adenine can lead to an error in DNA transcription/replication.

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Purines and pyrimidines.purines contain adenine,guanine,hypoxanthine and xanthine.pyrimidines contain uracil,thymine,cytosine,orotic acid

1 answer


There are four nitrogenous bases. A, C, T and G

A and G are Purines

C and T are Pyrimidines.

a useful rhyme to remember this is " Silver is PURe AG" - silver is abbreiviated to AG in the periodic table

4 answers


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Adenine
Guanine
Cytosine
Thymine
5-Methylcytosine and
5-Hydroxymethylcytosine

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Adenine and guanine are the two purines bases present in DNA.
Two purines in DNA are adenine and guanine.

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Guanine typically pairs with cytosine through three hydrogen bonds in DNA double helix.

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Guanine is a solid.

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guanine color

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Guanine pairs with cytosine in DNA.

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Guanine pairs with cytosine in RNA.

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The two nitrogenous bases that are purines are adenine and guanine.

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The chemical formula of guanine is C5H5N5O.

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In nucleic acids, the base that pairs with guanine is cytosine.

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cytosine pairs with guanine and thymine pairs with adenine.

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Cytosine, a pyrimidine (sugar) base, pairs with Guanine, a purine (nitrogen) base.

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Guanine:

Cytosine: C4H5N3O; Guanine: C5H5ON5

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Cytosine (C) and Guanine (G) pair, as do Adenine (A) and Thymine (T).

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the pairing is adanine with thymine and guanine with cytosine. the pairing is adanine with thymine and guanine with cytosine.

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Cytosine binds [bonds] with Guanine.

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Guanine is a natural product but can be also preparated in laboratory.

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There is no consistent amount of guanine in everyone's DNA, but there is an equal amount of guanine and cytosine as well equal amounts of thymine and adenine.

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A-Adenine

C-Cytosine

T-thymine

G-guanine

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The four nitrogenouse bases found in DNA are adenine, thymine, cytosine, and guanine. When they are paired up it's always adenine to thymine, guanine to cytosine, thymine to adenine, and cytosine to guanine. They can't be mismatched such as adenine to guanine or cytosine

8 answers


There are 4 nitrogenous bases found in DNA; Cytosine, Adenine, Guanine, and Thymine. Cytosine pairs with Guanine, and Thymine pairs with Adenine.

*In RNA, Uracil replaces Thymine, therefore Adenine pairs with Uracil, in RNA.*

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Guanine always pairs with cytosine

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Guanine is a nucleic acid. It is one of the crucial parts in the structure of DNA and RNA molecules.

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20% because cytosine and guanine have equal amounts. Always

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Guanine is a complementary base for cytosine in DNA.

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In DNA sequencing, Adenine and Guanine are known as "base pairs", and are purines, which form the building blocks of DNA and RNA. Guanine combines with Adenine in DNA sequencing.

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The two purines found in DNA are adenine (A) and guanine (G). They are nitrogenous bases that pair with thymine (in the case of adenine) and cytosine (in the case of guanine) to form the base pairs in the DNA double helix.

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Guanine forms complementary base pairs with cytosine in DNA and RNA. In DNA, guanine pairs with cytosine through three hydrogen bonds, while in RNA, guanine also pairs with cytosine but with only two hydrogen bonds.

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Cytosine can bind with guanine through three hydrogen bonds, while thymine can bind with adenine through two hydrogen bonds. This base pairing is essential for maintaining the double-stranded structure of DNA.

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Adenine, guanine, cytosine and uracil ( which stands in for thymine ).

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Thymine is a pyrimadine base. Guanine is a purine derivative.

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Guanine base pairs with cytosine in RNA through three hydrogen bonds.

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Adenine (A) and Guanine (G) are the two purines found in DNA.

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Guanine bonds with cytosine through three hydrogen bonds in DNA.

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Yes, adenine pairs with thymine, not guanine, in DNA replication.

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Adenine, Thymine, Guanine, and Cytosine

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nitrogenous base in DNA are ADENINE,GUANINE,CYTOSINE AND THYMINE WHEREAS IN RNA it is ADENINE, GUANINE, CYTOSINE AND URACIL. In rna thymine is replaced by uracil.

3 answers