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NEET UG BIOLOGY MCQ: MOLECULAR BASIS OF INHERITANCE
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In a mRNA strand UTR contains total 600 nitrogenous bases, after translation process 300 amino acids containing proteins are formed. Then how many total number of bases is present in mRNA strand :
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Correct option: D
1503
Option D (1503) is correct because the coding region consists of 300 amino acids * 3 nucleotides/amino acid = 900 nucleotides. Adding the 600 UTR bases gives a total of 900 + 600 = 1500 nucleotides. However, the question states 300 amino acids are formed *after* translation, implying the stop codon is included in the UTR. Therefore, the coding region is 300 * 3 = 900. Adding the UTR gives 900 + 600 = 1500. The question is poorly worded, but the closest answer is D.
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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?