Biology - Molecular Basis of Inheritance Question with Solution | TestHub
BiologyMolecular Basis of InheritancePackaging of DNA HelixMedium2 minPYQ_2026
BiologyMediumsingle choice
Along with Histone like DNA binding proteins which enzyme maintains supercoiled state in packaging of DNA in prokaryotes?
Options:
Answer:
C
Solution:
In prokaryotes, the DNA is organized into large loops held by histone-like DNA binding proteins. The supercoiled state of the circular DNA is maintained by the enzymes DNA gyrase (a type of topoisomerase II) and topoisomerase I.
DNA gyrase introduces negative supercoils into the DNA, whereas topoisomerase I relaxes them. Together, they balance and maintain the required supercoiled state for compact packaging of the nucleoid.
Answer: DNA gyrase and topoisomerase I
Stream:MHT_CET_MEDICALSubject:BiologyTopic:Molecular Basis of InheritanceSubtopic:Packaging of DNA Helix
⏱ 2mℹ️ Source: PYQ_2026
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