InterviewSolution
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InterviewSolution
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.
| 301. |
The haploid amount of DNA in a eukaryotic cell is termed :A. D valueB. C valueC. N valueD. A value |
| Answer» Correct Answer - B | |
| 302. |
Mutation is the change in :A. genetic drfitB. Gene frequencyC. base -pairs in DNA moleculeD. enviromental mechanism of evolution |
| Answer» Correct Answer - C | |
| 303. |
Haploid conten of human DNA isA. `3.3xx10^(6)bp`B. `3.3xx10^(9)bp`C. `4.6xx10^(6)bp`D. `6.6xx10^(9)bp` |
| Answer» Correct Answer - B | |
| 304. |
Male is haploid inA. LizardB. CockroachC. Honey BeeD. Bats |
| Answer» Correct Answer - B | |
| 305. |
Phenylketonura isA. Sex linked dominant traitB. Sex linked recesive traitC. Autosomal dominant traitD. Autosomal recessive trait |
| Answer» Correct Answer - D | |
| 306. |
Drosophila with genotype AAA+XX isA. normal maleB. Normal femaleC. Inter sexD. Metamale |
| Answer» Correct Answer - D | |
| 307. |
Females seldom become bald as they lackA. The gene for baldnessB. Y-chromosomeC. Male sex hormoneD. All the above |
| Answer» Correct Answer - C | |
| 308. |
The gene that controls the rate of mutation of another gene is :A. inducer geneB. mutator geneC. muttable geneD. regulator gene |
| Answer» Correct Answer - B | |
| 309. |
Traits controlled by genes present on X chromosome are calledA. Sex limitedB. Sex influencedC. AutosomalD. Sex linked |
| Answer» Correct Answer - D | |
| 310. |
Out of A-T,G-C pairing bases of DNA may exist in alternate valencyt state owing to arrangement calldA. point mutationB. frameshift mutationC. analogue substitionD. tautomerisational mutation |
| Answer» Correct Answer - D | |
| 311. |
The gene which increases the frequncy of mutation in other gene is referred to as :A. mutagenB. mutator geneC. hypostatic geneD. complementary gene |
| Answer» Correct Answer - B | |
| 312. |
Neurospora crossa is widely used in genetical stufies because of all the following except oneA. It is a haploid plant and mutations can be easily detectedB. It can be easily culturedC. Life cycle shortD. Spores are not affected by mutagens |
| Answer» Correct Answer - D | |
| 313. |
Which one of the following character in man is controlled by a recessive gene?A. colour bnlindnessB. Woolly hairC. BrachydactylyD. Curly hairs |
| Answer» Correct Answer - A | |
| 314. |
The blue green algae and bacteria containA. One linkage groupB. Two linkage groupsC. Threee linkage groupsD. None of the above |
| Answer» Correct Answer - A | |
| 315. |
Given below is the resesentation of kind of chromosomal mutation what is the kind of mutaton represnted ? A. DeletionB. duplicationC. inversionD. Reciproocal tranlocation |
| Answer» Correct Answer - C | |
| 316. |
which of the following is not considered as a mutagen ?A. Lower temperatureB. X-raysC. higher temperatureD. UV rays |
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Answer» Correct Answer - C Mutations can be induced by a number of agents called mutagens. Physical mutagen UV rays, X-rays, cosmic rays, high temperature Chemical mutagens 5 bromouracil, proflavin. |
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| 317. |
Given in the figure is chromosomal mutation It is A. DuplicationB. InversionC. DeletionD. Reciprocal translocation |
| Answer» Correct Answer - B | |
| 318. |
During a process of chromosomal mutation a student saw a chromosomal pair as a figure of 8. The most probable process expected for the above phenomenon isA. Deletion of one nucleotideB. duplicationC. Inversion and deletionD. Translocation and duplication |
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Answer» Correct Answer - D in the prosess of translocation a figure of 8 is visible sometimes when the chromosomal pair undergo terminalisation preness. |
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| 319. |
When a cluster of genes shows linkage behaviour theyA. induce cell divisionB. do not show a chromosome mapC. do not show independent assortmentD. show recombination during meiosis |
| Answer» Correct Answer - C | |
| 320. |
A gene is made up is :A. DNAB. RNAC. Eiither DNA or RNAD. Amino acids |
| Answer» Correct Answer - B | |
| 321. |
Genes are in the form of :A. Amount of base-pairsB. sequence of nucleotidesC. Proportion of base -pairsD. none of these |
| Answer» Correct Answer - A | |
| 322. |
Extranuclear inheritance occours in:A. phenylketoneuireB. colour blindnessC. Tay - sachs diseaseD. Killer strain in paramecium |
| Answer» Correct Answer - D | |
| 323. |
Extranuclear inheritance occurs inA. Killer ParamecliumB. killer AmoebaC. EuglenaD. Hydra |
| Answer» Correct Answer - A | |
| 324. |
Gences are compound of :A. PolyncleotidesB. peptidoglycanC. lipoproteinD. none of these |
| Answer» Correct Answer - B | |
| 325. |
which one is homogametic ?A. Human childB. Human embryoC. Human maleD. Human female |
| Answer» Correct Answer - D | |
| 326. |
Assertion : Somatic or mitotic cross over is never reported by any scientist.Reason: The meiotic cross over produces patches of cross over tissue between the normal cells.A. Both Assertion and reason are true and the reason is a correct explanation of the AssertionB. both Assertion and Reason are true and the Reason is not the correct explanation of the AssertionC. Assertion is true, but the Reason is falseD. Assertion is false, but the reason is true |
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Answer» Correct Answer - D v.Somatic cross-over is reported by C Stern in somatic cells of Drosophila and G Ponteearvo in fungus Aspergillus nodules and it is the somatic or mitotic cross over which produces such patches. |
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| 327. |
Assertion XX-XY mechanism of sex determinatio occurs in human beings.Reason:In human, the X-chromosome is longer than Y-chromosom.A. Both Assertion and reason are true and the reason is a correct explanation of the AssertionB. both Assertion and Reason are true and the Reason is not the correct explanation of the AssertionC. Assertion is true, but the Reason is falseD. Assertion is false, but the reason is true |
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Answer» Correct Answer - B vi. XX-XY mechanism of sex determination occurs in human being as wellas Drosophila. In this, XX zygotes become females, while XY become male. The size of X and Y-chromosomes is not similar, X is longer than Y-chromosome. |
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| 328. |
XX-XO sex chromosome complement occurs inA. CockroachB. Honey beeC. Human beingsD. Chimpanzee |
| Answer» Correct Answer - A | |
| 329. |
the maximum frequency of a recobinaton of gences at two loci is :A. 0.25B. 0.5C. 0.75D. 1 |
| Answer» Correct Answer - B | |
| 330. |
Genetic mapA. Shows the stages during the cell divisionB. Shows the distribution of various species in a regionC. Establishes sites of the genes on a chromosomeD. Establishes the various stages in gene evolution |
| Answer» Correct Answer - A | |
| 331. |
Cis- trans expression of genes is an example of :A. MutationB. Intergenic crossing overC. Intragenic crossing overD. cytoplasmic inheritance |
| Answer» Correct Answer - C | |
| 332. |
When two genetic loci produce indentical phentotypes in cis and trans positionn they areA. PseudoallelesB. Multiple allelesC. Part of same geneD. Different genes |
| Answer» Correct Answer - A | |
| 333. |
Cis tans expression of genes is an example ofA. MutationB. Intergenic crossing overC. Intragenic crossing overD. Cytoplasimic inheritance |
| Answer» Correct Answer - B | |
| 334. |
Genetic map is one that :A. shows the stages during the cell divisionB. establishes sites of the genes on a chromosomeC. establishes the various stages in gene evolutionD. shows the distribution of various species in a region |
| Answer» Correct Answer - B | |
| 335. |
Genetic maps of chromosomes are based on the frequency ofA. Dominace of genesB. transolcationC. nondisjunctionD. genstic recombination |
| Answer» Correct Answer - D | |
| 336. |
Exchange of segments between nonhomologus chromosomes isA. TranslocationB. iInversionC. Crossing overD. Tetrasomy |
| Answer» Correct Answer - A | |
| 337. |
Male honey bee has 16 chromosomes. What is the number chromosomes in worker and queen honey bee?A. n=32B. 2n=32C. n=16D. 2n=16 |
| Answer» Correct Answer - B | |
| 338. |
Errors during DNA replication , repair or recombination can lead to base -pair substitutions ,Such chnages are callled :A. MutagensB. Saltatory changesC. spontaneous mutationsD. Conditional mutations |
| Answer» Correct Answer - C | |
| 339. |
Lampbrouch chromosomes were discoved by :A. R`ddotu`ckertB. MorganC. BalbianiD. Mc Clung |
| Answer» Correct Answer - A | |
| 340. |
Baliani discovered a special type of chromosomes type chromosomes from salivary gland of chironomus larvae which are recognizd by the presence of :A. loopsB. bandsC. Both of theseD. none of these |
| Answer» Correct Answer - B | |
| 341. |
In polytene chromosomes dark bands are visble . These bands are formed by the apposition of :A. chromosomes on chromonemataB. protein particlesC. nucleosomesD. none of the above |
| Answer» Correct Answer - A | |
| 342. |
Assertion (A) :- polytene chromosomes have a high amount of DNA . Reason( R) :- poly chromosomes are formed by repeated chroomtids.A. Both (a) and (R ) are true (r ) is the correct explanation of (A)B. both (A) and(R ) are true but (R ) is not the correct explanations of (A)C. (A) is true statement but (R ) is falseD. Both (A) and (r ) arae false |
| Answer» Correct Answer - A | |
| 343. |
The salivary gland Chromosomes in the dipteran larvae, are useful in gene mappin becauseA. these are fusedB. these are easy to stainC. there are much longer in sizeD. they have endoredupolicated chromosomes |
| Answer» Correct Answer - D | |
| 344. |
Polytene Chromosomes are formed byA. endoeduplcation of chromosomesB. Somatic pairing of homologous chromosomesC. somatic pairing of nonhomologous chromosomesD. Geminal pairing of nonhomologous chromosomes |
| Answer» Correct Answer - A | |
| 345. |
If a part of chromosome gets separted and reattached in reverse positoion to the same chromosome, the mutation is calledA. InversionB. TransverionC. TransloctionD. Gene mutation |
| Answer» Correct Answer - A | |
| 346. |
Mutation isA. Achange in phenotype of an organism caused by some environmental factorB. An inheritable change in gentic materialC. Atemporart change in structure of the nucleusD. Any one of the above |
| Answer» Correct Answer - B | |
| 347. |
In Neuropora both recessive and dominant allels express their effect becacuseA. Two gens control each characterB. There are tow allesles for eacch characterC. The organism contains only one allele for a geneD. Each gene has only one allele |
| Answer» Correct Answer - C | |
| 348. |
Giant chromosomes are found in :A. nucleus of manB. oocytes of frogC. salivery glands of silkmothD. salivary glands of Drosophila |
| Answer» Correct Answer - D | |
| 349. |
Choose the incorrect statement regarding deletions.A. Can be detected during the pairing of homologous chromosomesB. Their genetic effect can be seen in the form of pseud dominanceC. In plants, they can be easily transmitted to offspringsD. None of the above |
| Answer» Correct Answer - C | |
| 350. |
The frequency of a mutant gene in a population is expected to increase, if the gene isA. DominantB. ourably selectedC. RecessiveD. Sex-linked |
| Answer» Correct Answer - B | |