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NEET UG BIOLOGY MCQ: MOLECULAR BASIS OF INHERITANCE
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One E.coli bacterium contains a hybrid DNA with one heavy strand and one light strand. It was allowed to replicate for 3 hours in a medium containing . What proportion of E.coli which will neither float nor sink in the test tube on ultra-centrifugation with ?
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Correct option: B
one out of
Option B (one out of ) is correct because after 3 hours (9 generations), there will be bacteria, and only the original hybrid DNA will remain hybrid, while all others will be DNA.
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Assertion: The bacteria and other prokaryotes
show high adaptability to the changing
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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?
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?