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Answer:
The nucleic acid is a macromolecule present in living systems in the form of either DNA or RNA, whose molecule consists of many nucleotides which are linked with each other to form long chains. The presence of DNA or RNA in an individual promotes continuity of life. The variability and complexity of nucleic acid are dependent on its constituent molecules as, sugar, a phosphate group, and a nitrogenous base. However, two monocyclic nitrogenous bases were classified purines (adenine:A, guanine:G) and pyrimidines (thymine:T, cytosine:C, and uracil:U).
In addition, RNA is a single-stranded structure which differs from DNA in two aspects, the sugar content of RNA is ribose, and pyrimidine base uracil replaces the thymine base of DNA. A ratio between two strands of DNA can be calculated by using Chargrff's rule which states that "DNA from any cell of all organisms possess a 1:1 ratio (base Pair Rule) of pyrimidine and purine bases'.
The purine to pyrimidine ratio in RNA with different bases is given below in the following table:
Presence of single strand in RNA does not follow chargaff's rule and alters the purine: pyrimidine ratio. The above ratio of each base in the given information is not equal, due to which the ratio of purines to pyrimidines is different. The ratio of DNA and RNA is not equal because DNA has its complementary DNA strand. However, bases in RNA might vary due to its single-strandedness property, but its ratio is dependent on the species.
Therefore, it can be concluded that the ratio of purines to pyrimidines is dependent on the species due to its genetic makeup. Hence, option (c) is correct.
The nucleic acid is a macromolecule found in dwelling structures withinside the shape of both DNA or RNA, whose molecule includes many nucleotides which can be connected with every different to shape lengthy chains. The presence of DNA or RNA in a character promotes continuity of life. The variability and complexity of nucleic acid are depending on its constituent molecules such as sugar, a phosphate group, and a nitrogenous base. However, monocyclic nitrogenous bases have been categorized as purines (adenine: A, guanine: G) and pyrimidines (thymine: T, cytosine: C, and uracil: U).
Also, RNA is a single-stranded shape that differs from DNA in aspects, the sugar content material of RNA is ribose, and pyrimidine base uracil replaces the thymine base of DNA. A ratio among strands of DNA may be calculated through the usage of Chargaff's rule which states that "DNA from any molecular of all organisms own a 1:1 ratio (base Pair Rule) of pyrimidine and purine bases".
The purine to pyrimidine ratio in RNA with one-of-a-kind bases is given the following :
Organism a tissue ratio
[tex]A+G/C+U[/tex]
rat liver nuclei ratio
0.911
rabbit liver nuclei ratio
0.870
cat brain ratio
1.14
carp muscles ratio
1.03
yeast ratio
1.235
The presence of a single strand in RNA does now no longer observes Chargaff's rule and alters the purine: pyrimidine ratio. The above ratio of every base withinside the given facts isn't always identical, because of which the ratio of purines to pyrimidines is one-of-a-kind. The ratio of DNA and RNA isn't always identical due to the fact DNA has its complementary DNA strand. However, bases in RNA would possibly range because of its single-strand property, however, its ratio is depending on the species.
What are RNA nitrogenous bases?
RNA has 4 bases of nitrogenous including:
Adenine, cytosine, uracil, and guanine.
Thus it concludes that the ratio of purines to pyrimidines depends on genetic makeup.
To know more about RNA refer to the link :
https://brainly.com/question/8773679
