In this article we will discuss about the heterochromatin and euchromatin in eukaryotic chromosomes. The terms “heterochromatin” and “euchromatin” were given by Heitz in 1928-29, although they had been discovered much earlier. Heterochromatic blocks observed during interphase were earlier termed as pro-chromosomes. The substance of which eukaryotic chromosomes are composed is known as chromatin; it […]
Heterochromatin and Euchromatin
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4 Main Stages Involved in Synthesis of RNA | Nucleic Acids
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The following points highlight the four main stages involved in synthesis of RNA. The stages are: 1. Binding of RNA Polymerase to DNA 2. Initiation of Transcription 3. Elongation of RNA chain 4. Termination of Transcription. Stage # 1. Binding of RNA polymerase to DNA: RNA polymerase binds to the “promoter site” on the DNA […]
DNA Repair Synthesis | Macromolecules
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The below mentioned article provides a short note on DNA repair synthesis. Several types of damages, such as breakage in DNA strand, alteration of base pairs, cross linking of DNA with DNA or cross linking of DNA with proteins and pyrimidine dimer formation etc., may occur in chromosomes. These damages may be caused by mutagens […]
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