What is the numeric relation between purine bases, Biology

Assignment Help:

Q. What is the numeric relation between purine and pyrimidine bases in the DNA molecule? Is that relation valid in the RNA molecules?

The DNA molecule is made of two bound polynucleotide chains that to form a helical structure (the double helix). The binding of the two chains is between their nitrogen-containing bases and it always obeys the following rules: a pyrimidine base, and guanine (G), adenine (A), a purine base, binds with thymine (T), a purine base, and binds to cytosine (C), a pyrimidine base. Therefore in one molecule of the DNA there will be the same number of adenine (A) and thymine (T) and same number of cytosine (C) and guanine (G). The quantities of purine and of pyrimidine bases then will also be the same in a 50% proportion for each type. The relation A = T and C = G, or A/T = C/G = 1, is called Chargaff's relation and the pairing rules described above are known as Chargaff's rules.

In the RNA there are not two nucleotide chains. The RNA is a simple chain molecule proportionality of nitrogen-containing bases to form it.


Related Discussions:- What is the numeric relation between purine bases

What are the major components of the cytoskeleton, Q. What are the major co...

Q. What are the major components of the cytoskeleton? The cytoskeleton is a network of very small filaments and tubules distributed throughout the cytoplasm of eukaryotic cells

Gastropods - feeding and digestion in molluscs, Gastropods - Feeding and Di...

Gastropods - Feeding and Digestion in Molluscs In several gastropods the digestion is extracellular. Though, some herbivore gastropods like Crepidula are ciliary feeders and h

Define nutritional management of celiac disease, Define Nutritional Managem...

Define Nutritional Management of Celiac Disease? A gluten-free diet is the major therapy for celiac disease patients, particularly children, and may be needed for lifelong adhe

Mouth examination of new born, Mouth Inspect and palpate the lips, ...

Mouth Inspect and palpate the lips, gums, tongue, palate and oropharynx. Rule out cleft lip and palate, size of chin if small and receding it  shows micrognathia ind

Diseases caused by abnormal gh secretion by the hypophysis, Q. What are som...

Q. What are some diseases caused by abnormal GH secretion by the hypophysis? In childhood deficient GH secretion may lead to delayed growth and in severe cases to nanism that i

Prevention and control from escherichia coli, Q. Prevention and Control fro...

Q. Prevention and Control from escherichia coli? Prevention and Control: Involves avoiding contaminated food and water that have high coliform counts, avoiding unpasteurized ju

Clonal propagation, Clonal Propagation Most cultivars of ornamental a...

Clonal Propagation Most cultivars of ornamental and fruit species and forest trees are highly heterozygous. Consequently, their seed progeny is not true-to-type. To preserve

Explain avoidance of shock in nutritional care, Explain Avoidance of Shock ...

Explain Avoidance of Shock in Nutritional Care? Loss of plasma proteins lead to decrease in blood volume (hypovolemia) and lowered red blood cell volume causing a potential dan

Vacuoles, VACUOLES  Some animals cells may have  one to a few small  fl...

VACUOLES  Some animals cells may have  one to a few small  fluid  filled vacuoles.. Plants  cells  in general  possess one or a few  large vacuoles. Vacuoles  of animals  cells

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd