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NEET UG BIOLOGY MCQ: MOLECULAR BASIS OF INHERITANCE
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Transcription is chemically and enzymatically similar to replication. But the below given statements which differ transcription from replication, are
(a) New strand is made form ribonucleotides
(b) The product does not remain base paired to the template
(c) polymerase does not need primer
(d) Helicase is required for local unwinding of strands during transcription
(a) New strand is made form ribonucleotides
(b) The product does not remain base paired to the template
(c) polymerase does not need primer
(d) Helicase is required for local unwinding of strands during transcription
View answer and explanation
Correct option: D
(a), (b) and (c)
Option D ((a), (b) and (c)) is correct because transcription uses ribonucleotides, the RNA product doesn't remain base-paired, and RNA polymerase doesn't need a primer, which are all differences from DNA replication. Helicase is not always required for transcription.
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show high adaptability to the changing
environment.
Reason: Member of kingdom Monera are
efficient in regulating gene expression. Which of the following is not true for DNA polymerase? Dystrophin gene consists of Read the following four statements (i-iv).
i. In transcription, adenosine pairs with uracil.
ii. Regulation of lac operon by repressor is referred to as positive regulation
iii. The human genome has approximately 30,000 genes
iv. Haemophilia is a sex-linked recessive disease
How many of the above statements are correct? Reactive group of RNA is?