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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 401. |
A gene that takes part in synthesis of polypeptide isA. Promotor geneB. Structural geneC. Regulator geneD. Operator gene |
| Answer» Correct Answer - B | |
| 402. |
To code the 50 aminoacids in a polypeptide chain, what will be the minimum number of nucleotides in its cistron?A. 50B. 153C. 306D. 300 |
| Answer» Correct Answer - C | |
| 403. |
Assertion :- In prokaryotes, there occurs coupled transcription & translation. Reason : In prokaryotes, translation occurs in cytoplasm and transcription in nucleoplasm.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - C | |
| 404. |
Which of the following is involved in translation :-A. DNAB. mRNA, tRNA, DNAC. mRNA, tRNAD. Only mRNA |
| Answer» Correct Answer - C | |
| 405. |
Which of the following RNA play structural and catalytic role during translationA. m-RNAB. t-RNAC. r-RNAD. All |
| Answer» Correct Answer - C | |
| 406. |
Which of the following is not correct about translationA. It starts with UAGB. Stopped at termination codonC. Based on operon modelD. Occurs in nucleus |
| Answer» Correct Answer - D | |
| 407. |
A gane containing multiple exons and at least one intron is termed as :-A. split geneB. operator geneC. synthetic geneD. epistatic gene |
| Answer» Correct Answer - A | |
| 408. |
Transfer of genetic information from a polymer of numceotides to a polymer of aminoacid is -A. ReplicationB. TranscriptionC. TranslationD. Reverse transcription |
| Answer» Correct Answer - C | |
| 409. |
Translation refers to the process of -A. Polymerisation of nitrogen basesB. Polymerisation of nucleotidesC. Polymerisation of nucleosidesD. Polymerisation of amino acids |
| Answer» Correct Answer - D | |
| 410. |
Gene and cistron words are sometimes used synonymously because -A. One cistron contains many genesB. One gene contains many cistronsC. One gene contains one cistronD. One gene contains no cistron |
| Answer» Correct Answer - C | |
| 411. |
Khorana & his collegeous synthesized an RNA molecule with repeating sequence of `U G N_(2-)` bases. The RNA with "UGU GUG UGU GUG" produced at tetral prptide with alternating sequences of cystein and valine. This prove that codon for cystein & valine isA. UGG, GUUB. UUG, GGUC. UGU & GUGD. GUG & UGU |
| Answer» Correct Answer - C | |
| 412. |
Assertion :- Adenine and Guanine are substituated purines. Reason : In Adenine and Guanine purine hetercylic ring has either amino or amino and oxy groups.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - A | |
| 413. |
Assertion :- The senstivity of fingerprinting technique has been increased by the use of PCR. Reason : DNA from a single cell is not enough to perform DNA fingerprinting analysis.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - C | |
| 414. |
On an average, hwo many purine `N_(2)` bases are present in single coil of DNAA. FourB. FiveC. TenD. Uncertain |
| Answer» Correct Answer - C | |
| 415. |
Which purine & pyrimidine bases are paired together by H- bonds in DNA-A. `AC&AT`B. `GC&AT`C. `GA&TC`D. None of the above |
| Answer» Correct Answer - B | |
| 416. |
What is the nature of the 2 strands of a DNA duplex :-A. Identical & ComplimentaryB. Antiparallel & complimentaryC. Dissimilar & non complimentaryD. Antiparallel & non complimentary |
| Answer» Correct Answer - B | |
| 417. |
A single stranded DNA is present in-A. TMVB. SalmonellaC. Coliphage `phi xx 174`D. Bacteria |
| Answer» Correct Answer - C | |
| 418. |
Circular and double stranded DNA occurs in -A. GolgibodyB. MitochondriaC. NucleusD. Cytoplasm |
| Answer» Correct Answer - B | |
| 419. |
DNA polymerease is needed for -A. Replication of DNAB. Synthesis of DNAC. Elongation of DNAD. All of above |
| Answer» Correct Answer - D | |
| 420. |
DNA Replication occurs at-A. Go & G-1B. `G_(2)-` stageC. S- StageD. Mitotic phase |
| Answer» Correct Answer - C | |
| 421. |
DNA duplication occurs atA. Meisosis-IIB. Mitotic interphaseC. Mitosis onlyD. meisosis and mitosis both |
| Answer» Correct Answer - D | |
| 422. |
Walter sutton is famous for his contribution to :A. Gentic engineeringB. TotipotencyC. Qantitative geneticsD. Chromosomal theory of inheritance |
| Answer» Correct Answer - D | |
| 423. |
In density gradient centrifugation, the bulk DNA forms____ while satelite DNA forms____A. Major peak, Minor peakB. Minor peak, Major peakC. Major peak, Major peakD. Mainor peak, minor peak |
| Answer» Correct Answer - A | |
| 424. |
Assertion :- The repetitive DNA are separted from bulk genomic DNA as different peaks during density geadient centrifugation. Reason : Type bulk DNA forms a minor peak %+& other major peaks are referred to as satellite DNA.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - C | |
| 425. |
Which is the most common mechanism of genetic varisation in the poplulation of a sexually-reproducing organismA. Chromosomal aberrationsB. Genetic driftC. RecombinationD. Teransduction |
| Answer» Correct Answer - C | |
| 426. |
A population will not exist in Hardly-Weinberg equilbrium ifA. There are no mutationsB. There is no migrationC. The population is largeD. Individuals mate slectively |
| Answer» Correct Answer - C | |
| 427. |
DNA molecule has uniforms dimeter due to ?A. Double standedB. Presence of phosphateC. Specific base pairing between purine and pyrimidineD. Specific base pairing between purine and purine |
| Answer» Correct Answer - C | |
| 428. |
Following structure is related to which compound ? A. AdenineB. GuanineC. UracilD. Thymine |
| Answer» Correct Answer - C | |
| 429. |
Assertion :- Complementary base pairing confers a very unique property to the DNA chains. Reason : If sequence of one strand is known then sequence in other strand can be predicted.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - A | |
| 430. |
If the sequence of bases in one strnd of DNA is known hen the sequence in other strand can be predicted on the basis of -A. AntiparallelB. ComplementryC. PolarityD. Colling |
| Answer» Correct Answer - B | |
| 431. |
Polymer of deoxyribonucleotides isA. DNAB. RNAC. Both (1) & (2)D. None |
| Answer» Correct Answer - A | |
| 432. |
The unequivocal proof that DNA is the genetic material came from the experiments of -A. Hershey and chases (1952)B. Frederic Griffith (1928)C. Watson and CrickD. Meselson and Stal (1958) |
| Answer» Correct Answer - A | |
| 433. |
An example of the quantitative trait in man isA. Hair colourB. Colour of eyeC. Skin colourD. Shape of nose |
| Answer» Correct Answer - C | |
| 434. |
Quantitative/polygenic inheritance was first noted byA. DevenportB. GaltonC. MendelD. Kolreute |
| Answer» Correct Answer - D | |
| 435. |
Polygenic genes show :-A. Identical phenotypeB. Identical biochemistryC. Different phenotypeD. Incomplete dominance |
| Answer» Correct Answer - C | |
| 436. |
A dihybrid ratio of 1:4:6:4:1 is obtained instead of 9:3:3:1. This is an example ofA. Complementary geneB. Supplementary geneC. Polygenic inheritanceD. Incomplete dominance |
| Answer» Correct Answer - C | |
| 437. |
If somatic cells of a human male contain single barrbody, the genetic composition of the person would be or The genotype of a boy having sexual characters of a girl isA. XYYB. XXYC. XOD. XXXY |
| Answer» Correct Answer - B | |
| 438. |
Assertion :- Male nd female ratio is almost equal in this world. Reason male and felmale genotype is XY and XX.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - A | |
| 439. |
which genotype represents a true hybrid condition?A. tt rrB. Tt rrC. Tt RrD. TT Rr |
| Answer» Correct Answer - C | |
| 440. |
Assertion :- DNA is chemically and structurally more stable. Reason : DNA have no catalytic properties.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - A | |
| 441. |
The longer the chromosome of an organism, the more genetic variability it gets from :-A. Independent assortmentB. LinkageC. Crossing overD. Mutation |
| Answer» Correct Answer - C | |
| 442. |
Mendel did not propose:A. DominanceB. Incomplete dominanceC. SegregationD. Independent assorthment |
| Answer» Correct Answer - B | |
| 443. |
In a dihybrid cross, when one pair of alleles show incomplete dominance, genotypic ratio comes toA. `3:6:3:1:2:1`B. `1:2:2:4:12:1:2:1`C. `9:3:3:1`D. `1:2:1` |
| Answer» Correct Answer - B | |
| 444. |
Which of the following is the example of codomiance :-A. `Hb^(A) HB^(A),I^(A)I^(B)`B. `Hb^(s)Hb^(s)I^(A)I^(B)`C. `Hb^(A)Hb^(s)I^(A)I^(B)`D. `Hb^(s)Hb^(s)I_(A)I^(A)` |
| Answer» Correct Answer - C | |
| 445. |
Incomplete dominance was discovered byA. De vriesB. CorrensC. TschermakD. None |
| Answer» Correct Answer - B | |
| 446. |
Which of the following conditions represent a case of co-dominant genes.A. A gene expresses itself, supressing the phenotypic effect of its allelesB. Genes that are similar in phenotypic effect when present separately, but when thgether interact to produce a different traitC. Allele, both of which interact to prduce a trait, which may resemble either of the parental type.D. Alleles, each of which produces an independent effect in heterozgous condition. |
| Answer» Correct Answer - D | |
| 447. |
Assertion :- It is the metabolic, physiological or environmental conditions that regulate the expression of genes. Reason : The genes in a cell are expressed to perform a particular function or a set of functions.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - B | |
| 448. |
Assertion :- Opernon concept is opplicable only in prokaryotes. Reason : Gene expression in prokaryotes is influenced by environmental conditions.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - B | |
| 449. |
Which one of the following character in man is controlled by a recessive gene?A. ColourblindnessB. Wooly hairC. Brachy-dectylyD. Curly hairs |
| Answer» Correct Answer - A | |
| 450. |
Given pedigree shows inheritance of autosomal recessive gene. What is the genotype of given parents :- A. `A A , aa`B. `aa,A A`C. `aa,Aa`D. `Aa,Aa` |
| Answer» Correct Answer - A | |