Zoology - Molecular Basis of Inheritance Question with Solution | TestHub
ZoologyMolecular Basis of InheritanceRegulation of Gene ExpressionEasy2 minPYQ_2020
ZoologyEasysingle choice
How many of these statements are correct?
(i) In transcription, adenosine pairs with uracil.
(ii) Regulation of lac operon by a repressor is referred to as positive regulation.
(iii) The human genome has approximately 50,000 genes.
(iv) DNA fingerprinting utilizes VNTRs and RFLP.
Options:
Answer:
A
Solution:
In the transcription process, mRNA is synthesized from DNA as a template. In it, for making RNA adenine of DNA pairs with Uracil as thymine is not part of RNA. DNA fingerprinting is the analysis of the minisatellites in the genome which are unique for the various organisms. It utilizes VNTRs and RFLP for this analysis. Regulation of lac operon is a negative feedback regulation depended on the presence or absence of lactose.
Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Molecular Basis of InheritanceSubtopic:Regulation of Gene Expression
⏱ 2mℹ️ Source: PYQ_2020
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