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NEET UG BIOLOGY MCQ: MOLECULAR BASIS OF INHERITANCE
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Ten E.coli cells with - ds DNA are incubated in medium containing nucleotide. After 60 minutes, how many E.coli cells will have DNA totally free from
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Correct option: D
60 cells
Option D (60 cells) is correct because after 60 minutes (3 generations), the number of cells is 10 * 23 = 80. Only the original 20 strands will have any N15, so 60 cells will be free of N15.
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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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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?