Molecular Basis of Inheritance Set 4

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This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Molecular Basis of Inheritance Set 4

Q1 | Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a “triplet” (AIPMT - 2009)
Q2 | Select the two correct statement out of the four statement given below about “ Lac opern”(AIPMT-2010)(i) Glucose or galactose may bind with the repressor and inactivate it(ii) In the absence of lactose the repressor bind with the operator region(iii) The Z -gene codes for permease(iv) This was elucidated by Francois Jacob and Jacques MonodThe correct statements are
Q3 | Which one of the following does not follow the central dogma of molecular biology ? (AIPMT - 2010)
Q4 | The lac opern consists of (AIPMT - 2010)
Q5 | The 31 - 51Phosphodiester linkages inside a potynucleotide chain serve to join AIPMT - 2010)
Q6 | Ribosomal RNA is actively synthesized by
Q7 | If one strand of DNA has the nitrogenous base sequence as ATCTG, What would be thecomplementary RNA strand Sequence (AIPMT - 2012)
Q8 | Semiconservative DNA replication using 15 N was demonstrated by (AIIMS -1994)
Q9 | In operan concept, the operator gene combines with (AIIMS -1986)
Q10 | Termination of polypeptide chain is brought about by
Q11 | RNA that picks up specific aminoacid from amino acid pool of cytoplasm to carry it to ribosome during protein synthesis is
Q12 | Correct sequenceof code transfer during polypeptide formation is (AIIMS -1999)
Q13 | Best method to determine paternity is
Q14 | DNA is copied from m-RNA molecule with help of
Q15 | Nucleotide arrangement in DNA can be seen by
Q16 | Pneumococcus experiment proved that (AFMC - 1993)
Q17 | A DNA nucletotide chain has A G C T T C G A sequence The nucleotide sequence of other chain would be
Q18 | A functional unit in synthesis of protein is (MPPMT - 1994)
Q19 | VNTR is employed for (AMU - 2002)
Q20 | Out of 64 codons 61 code for 20 types of aminoacids It is due to (CBSE - 2002)
Q21 | Okazaki fragments are joined by enzyme (Kerala 2005)
Q22 | Heat killed pathogenic cells and live non pathogenic cells are mixed and injected into MiceThe result would be (Kerala - 2001)
Q23 | Generally Cockroach is .......... or .......... colored insect, however in tropical regions, they havebeen reported to be .........., .......... and .......... colored.
Q24 | In case of common species of Cockroach, Morphologically which statement is correct ?
Q25 | Head of the Cockroach is formed by the fusion of .......... segments.