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Read the following four statements (A-D).
(A) In transcription, adenosine pairs with uracil.
(B) Regulation of lac operon by repressor is referred to as positive regulations.
(C) The human genome has approximately 50,000 genes.
(D) Haemophilia is a sex-linked recessive disease.
How many of the above statements are correct
Options
(a) Two
(b) Three
(c) Four
(d) One
Correct Answer:
Two
Explanation:
Statement A & D is correct. Regulation of lac operon by repressor is referred as negative regulation. In negative regulation, a repressor molecule binds to the operator of an operon and terminates transcription. In positive regulation, an activator interacts with the RNA polymerase in the promoter region to initiate transcription. Human genome contains some 20,000 – 25,000 genes billion bases.
Related Questions: - Which one of the following is not applicable to RNA?
- Which of the following animals does not undergo metamorphosis
- The vitamins, which we must daily consume should be
- A certain patient is suspected to be suffering from Acquired Immuno Deficiency Syndrome
- Lack of pulmonary surfactant produces
Topics: Genetics
(204)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which one of the following is not applicable to RNA?
- Which of the following animals does not undergo metamorphosis
- The vitamins, which we must daily consume should be
- A certain patient is suspected to be suffering from Acquired Immuno Deficiency Syndrome
- Lack of pulmonary surfactant produces
Topics: Genetics (204)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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