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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.
| 101. |
Gene mutation is :A. mutation in the genes of DNAB. mutation in the chromosomesC. mutation in the chromosomesD. change in the sequence of nitrogenous bases |
| Answer» Correct Answer - D | |
| 102. |
Gene mutation is caused :-A. Due to reproductionB. Due to linkageC. Due to change in sequence of `N_(2)` baseD. Due to changes in sequence of genes in DNA |
| Answer» Correct Answer - C | |
| 103. |
The locus of mutation is :-A. GeneB. ChromosomeC. CentromereD. Nucleus |
| Answer» Correct Answer - A | |
| 104. |
Which of the following undergoes change in mutation :-A. ChromosomeB. Structure of geneC. Sequence of geneD. Any of the above |
| Answer» Correct Answer - D | |
| 105. |
Genetic mutations occur in :-A. DNAB. RNAC. ProteinD. RNA & protein both |
| Answer» Correct Answer - A | |
| 106. |
Which cross yields red, white and pink flower variety of Snapdragon flower.A. RR X RrB. Rr X RRC. Rr X RrD. Rr X rr |
| Answer» Correct Answer - C | |
| 107. |
Which cross yields red, white and pink flower variety of Snapdragon flower.A. `R R xxRr`B. `RrxxR R`C. `RrxxRr`D. `Rrxxrr` |
| Answer» Correct Answer - C | |
| 108. |
In Drosphila male differentiation is controlled by :-A. No. of Y-chromsomeB. No. of X-chromosomesC. Ratio between number of X-chromosome and the set of autosomeD. Sets of autosome |
| Answer» Correct Answer - C | |
| 109. |
Given below is the prpresentation of a kind of chromosomal mutation : What is the kind of mutation represented A. deletionB. duplicationC. inversionD. reciprocal translocation |
| Answer» Correct Answer - C | |
| 110. |
Maize has 10 pairs of chromosomes.How many linkage groups does it have ?A. `05`B. 10C. 20D. 40 |
| Answer» Correct Answer - B | |
| 111. |
Assertion : Deoxyribonucleoside triphosphate act as substrates and also provides energy for polymerisation. Reason : Deoxyribonucleoside triphosphate act as substrates and also provides energy for polymerisation.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 | |
| 112. |
An abrupt of discontinuous change which is inheiteA. An abrupt or discontinous change which is inheritedB. A factor for plant growthC. A vhange which affect parents only and is never inheriterD. A change which affects the offspring of `F_(2)` generation |
| Answer» Correct Answer - A | |
| 113. |
An exchange of segments between the two non homologous chromosomes is callledA. Crossing over TransductionB. TranslocationC. InversionD. Transition |
| Answer» Correct Answer - B | |
| 114. |
Assertion :- Genes are the units of inheritance. Reason :- They contain the information that is required to express a particular trait in an organism.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 | |
| 115. |
The condition in which only one allele of a pair is present in a diploid organism is known as :-A. HomozygousB. HeterzygousC. HemizygousD. Incompleted dominance |
| Answer» Correct Answer - C | |
| 116. |
Which chromosome set is found in male Grasshopper?A. `2A+XY`B. `2A+XO`C. `2A+YY`D. `2A+XX` |
| Answer» Correct Answer - C | |
| 117. |
Functioning of structural gene is controlled by:A. OperatorB. PromoterC. LigaseD. Regulator gene |
| Answer» Correct Answer - D | |
| 118. |
A functional complex comprising a cluster of genes including structural genes, a promoter gene, an operator region and a regulatory gene was discovered by :A. Beadle and Tatum (1958)B. Watson and crick (1953)C. Jacob and Monad (1961)D. Britten and Davidson (1961) |
| Answer» Correct Answer - C | |
| 119. |
TDF gene is a :-A. A gene present on X-chromosomeB. A segment of RNAC. A proteinaceous factorD. A gene present on Y-chromosome |
| Answer» Correct Answer - D | |
| 120. |
Replication fork is -A. Large opening of the DNA helixB. Small opening of the DNA helixC. Tightly coiled part of DNA helixD. Loosely coiled part of DNA helix |
| Answer» Correct Answer - B | |
| 121. |
Main enzyme of DNA replicatio is -A. DNA dependent RNA polymeraseB. DNA dependent DNA polymeraseC. RNA dependent RNA polymeraseD. RNA dependent DNA polymerase |
| Answer» Correct Answer - B | |
| 122. |
Okazaki fragments are synthesised on :-A. Leading stands of DNA onlyB. Lagging staands of DNA onlyC. Both leading and lagging starands of DNAD. Complementary DNA |
| Answer» Correct Answer - B | |
| 123. |
The strans of DNA, which does not code for anything is referred ot as :-A. Template strandB. Antisense strandC. Coding strandD. Nonocoding strand |
| Answer» Correct Answer - C | |
| 124. |
DNA replicatio includes :-A. DNA ligaseB. DNA polymerase and ligaseC. RNA polymerase and ligaseD. All of these |
| Answer» Correct Answer - B | |
| 125. |
In DNA replication, the prime is :-A. A small deoxyribonucleotide polymerB. A small ribonucleotide polymerC. Helix destibilizing proteinD. Enzyme taking part in joining nucleotides of new strand |
| Answer» Correct Answer - B | |
| 126. |
During DNA replication in prokaryotes DNA is anchoredA. ChromosomeB. MesosomeC. NucleolusD. Ribosome |
| Answer» Correct Answer - B | |
| 127. |
Which of the following is called adaptor moleculeA. DNAB. m-RNAC. t-RNAD. RNA |
| Answer» Correct Answer - C | |
| 128. |
Code in RNA corresponding to AGCT in DNA.A. TACAB. UCGAC. TCGAD. AGUC |
| Answer» Correct Answer - B | |
| 129. |
Which of the following is most difficult to detect :-A. Auxotrophic mutationB. Lethal mutationC. Recessive non-lethal mutationD. Dominant mutation |
| Answer» Correct Answer - C | |
| 130. |
If a mutation is not visible in successive generation it is called :A. DeletionB. Dominant mutationC. Recessie mutationD. Segregation |
| Answer» Correct Answer - C | |
| 131. |
Hypertrichosis is :-A. Holandric characterB. X-Linked characterC. Diagenic characterD. Sex-influened character |
| Answer» Correct Answer - A | |
| 132. |
In case of incomplete dominance, `F_(2)` generation hasA. Genotypic ratio equal to phenotypic ratioB. Gentypic ratio is `3:1`C. Phenotypic ratio is `3:1`D. None |
| Answer» Correct Answer - A | |
| 133. |
In which of the following the inheritance takes place only by male :-A. NuclearB. CytoplasmicC. co-dominanceD. Holandric inheritance |
| Answer» Correct Answer - D | |
| 134. |
Incomplete dominance is found inA. MirabilsB. AntirrhinumC. Andulasion fowlD. All of the above |
| Answer» Correct Answer - C | |
| 135. |
In man sex-linked characters are only transmitted through :A. X-chromosomeB. AutosomesC. Y-chromosomeD. X-chromosome, Y-chromosome & Autosomes |
| Answer» Correct Answer - A | |
| 136. |
Which of the following is ot a sex linked charactersA. HaemophiliaB. Colour blindnessC. HypertrichosisD. Baldness |
| Answer» Correct Answer - D | |
| 137. |
There is dominant (G) over black (g). Which of the following will most probabily give `50%` black and `50%` grey offspring ?A. `GG xxgg`B. `Ggxxgg`C. `GGxxGg`D. `ggxxgg` |
| Answer» Correct Answer - B | |
| 138. |
Haemophilic gene does not transfer from :-A. Haemophilic father to sonB. Haemophilic moter to sonC. Haemophilic father to daughterD. Haemphilic moter fo son & daughter |
| Answer» Correct Answer - A | |
| 139. |
Crossing AABB & aabb, the probability of AaBB would be in `F_(2)` generation :-A. `1//16`B. `2//16`C. `8//16`D. `4//16` |
| Answer» Correct Answer - D | |
| 140. |
On crossing red & ehite flowered plants the ration of red and white flowered plnts in `F_(2)` generation was `60:20,` then on selfing the heterozygous red flowered plants, the offsprings would be :-A. `72:24`B. `40:60`C. `52:48`D. `84:16` |
| Answer» Correct Answer - A | |
| 141. |
Sickel cell anemia is the result of ____A. frame shiftB. deletionC. pointD. None of the above |
| Answer» Correct Answer - C | |
| 142. |
During transcription, the site of DNA molecule at which RNA polymerase binds is calledA. PromoteB. RegulatorC. ReceptorD. Enhance |
| Answer» Correct Answer - A | |
| 143. |
Maximum number of gene present on which cheomosome number in human.A. 1stB. XC. YD. 10th |
| Answer» Correct Answer - A | |
| 144. |
In lac operon RNA polymerase binds withA. Promoter geneB. Operator ganeC. Structural ganeD. Regulator gene |
| Answer» Correct Answer - A | |
| 145. |
DNA polymerase I is involved in :-A. Remuval of RNA primeB. Filling of gapC. Joining of okazaki fragmentsD. Both 1 and 2 |
| Answer» Correct Answer - D | |
| 146. |
`T_(m)` melting temperature) value of DNA is high when if containsA. `A+TgtG+`B. `G+CgtA+T`C. `A+T=G+C`D. `A+G=T+C` |
| Answer» Correct Answer - B | |
| 147. |
Assuming that 50 heavy (i.e., containing `N^(15)`) DNA molecules replicated twice in a medium containing `N^(14)` we expectA. 100 hlaf heavy and half light and 150 light DNA moleculesB. 100 half heavy and half light and 100 light DNA moleculesC. 50 heavy and 150 light DNA moleculesD. 50 heavy and 100 light DNA molecules |
| Answer» Correct Answer - B | |
| 148. |
During protein synthesis, amino acid gets attached to tRNA with the help ofA. mRNAB. Aminoacyl synthetaseC. RibosomeD. rRNA |
| Answer» Correct Answer - B | |
| 149. |
Assertion :- Colchicing induces polyploidy Reason : Colchicine causes disjucation of chromosomes.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 | |
| 150. |
Which from of RNA has a structure resembling clover leaf ?A. rRNAB. hnRNAC. mRNAD. tRNA |
| Answer» Correct Answer - D | |