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NEET UG BIOLOGY MCQ: MOLECULAR BASIS OF INHERITANCE
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An E. coli having a heavy DNA molecule labelled with is allowed to grow in a medium with normal . Which of the following is correct for DNA molecules that were extracted from the culture after 40 minutes?
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Correct option: C
Lower density than parental types
Option C (Lower density than parental types) is correct because after 40 minutes (two generations), all DNA molecules will contain at least one strand of the normal 14N, resulting in a lower overall density compared to the original 15N 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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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?