What is the Difference Between hnRNA and mRNA?

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RNA synthesis takes place in the nucleus in eukaryotes. However, when RNA is formed, it is transferred from the nucleus to the cytoplasm. The physiological environment in the nucleus is quite different than than of the cytoplasm. This physiological difference may harm newly formed RNA in the cytoplasm. In order to prevent RNA from any damage, it is processed first and then transferred to the cytoplasm. A...
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What is Chargaff's Rule of DNA?

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Erwin Chargaff was an Australian biochemist who analyzed nucleic acids of many organisms. From his research, he concluded that the number of purine bases (A, G) equals the pyrimidine bases (C, T) in any double stranded DNA of an organism. It means,  A+G / T+C = 1;  A+T / C+G may vary from organism to organism. % A = % T, and % G = % C Based on Chargaff's rule, many questions are asked...
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What Is Genic Balance Theory?

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C.B. Bridges in 1922 proposed the Genic Balance Theory for sex determination while working on his experimental model, Drosophila. Like mammals, XX sex chromosome determines female character and XY as males in Drosophila. However, unlike humans, Y chromosome is not responsible for maleness in Drosophila, as Y chromosome is heterochromatic in nature and thus not active in sex determination. According...
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What are the different properties of water?

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What is called as the universal solvent. Water has many special properties that enable it to act as a solvent. These features are due to the polar structure of water molecule. Polarity of water molecules gives rise to hydrogen bonds. The chemical formula of water is H2O. It means, two hydrogen atoms get attached to an oxygen atom. Since oxygen is electronegative in nature, it carries...
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