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NEET UG BIOLOGY MCQ: MOLECULAR BASIS OF INHERITANCE
1
Medium
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Understanding
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In Meselson and Stahl’s experiment using E. coliculture, the duration between the appearance of equal amount of light and hybrid DNA was
I. Two generation, II. 40 minutes, III. 20 minutes, IV. Three generation
Choose the correct option for given statement of question.
I. Two generation, II. 40 minutes, III. 20 minutes, IV. Three generation
Choose the correct option for given statement of question.
View answer and explanation
Correct option: A
I and II
Option A (I and II) is correct because the appearance of equal amounts of light and hybrid DNA occurs after one generation (20 minutes), and the second generation starts showing light DNA.
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Assertion: The bacteria and other prokaryotes
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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).
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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?