Biology - Molecular Basis of Inheritance Question with Solution | TestHub
BiologyMolecular Basis of InheritanceReplicationMedium2 minPYQ_2026
BiologyMediumsingle choice
During replication the enzyme that forms double helix to form daughter DNA molecule is ___________.
Options:
Answer:
B
Solution:
During DNA replication, helicase unwinds the DNA double helix, and topoisomerase relieves the torsional strain caused by unwinding. DNA polymerase synthesizes the new strands. On the lagging strand, DNA is synthesized in short segments called Okazaki fragments. DNA ligase is the enzyme that joins these Okazaki fragments by forming phosphodiester bonds, sealing the nicks to form a continuous daughter DNA strand, which then exists as a complete double helix.
Permease is a membrane transport protein and is not involved in DNA replication.
Answer: ligase
Stream:MHT_CET_MEDICALSubject:BiologyTopic:Molecular Basis of InheritanceSubtopic:Replication
⏱ 2mℹ️ Source: PYQ_2026
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