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.
| 351. |
An example of disease of molecular muttion isA. Sickle cell anaemiaB. Erythroblastosis foetalisC. HaemophiliaD. Anaemia |
| Answer» Correct Answer - A | |
| 352. |
Recessive muttion is not expressed inA. Homozygous maleB. Heterozygous maleC. Heterozygous femaleD. Homozygous female. |
| Answer» Correct Answer - C | |
| 353. |
The substance which causes a defineite change in genes is calledA. MutagenB. ToxinC. CytotoxinD. Alkaloid |
| Answer» Correct Answer - A | |
| 354. |
Women rarely experience sex-linked defects because they must be:A. HomozygousB. CarrierC. HeterozygousD. Develop immunity |
| Answer» Correct Answer - A | |
| 355. |
if a mutation is not visible in successive generation it is scalled :A. DeletionB. segregationC. dominant mutationD. recessive mutation |
| Answer» Correct Answer - D | |
| 356. |
Molecular wight of yeast cell is ,A. `0.5xx10^(9)`B. `1xx10^(9)`C. `8.5xx10^(8)`D. `2.56xx10^(9)` |
| Answer» Correct Answer - C | |
| 357. |
If the haploid number of chromosome is 10. Then, what is a terasomic number?A. 20B. 10C. 22D. 40 |
| Answer» Correct Answer - C | |
| 358. |
Match column I with Column II and select the correct option: `{:(,"Column I" ("Name of the organism "),,"Column II "("Haploid chromosome number in gamete")),( A, "Ophioglossum ",1, 23),(B,"Rice",2, 24),(C, "Potato",3,12),(D,"Man",4, 630):}`A. `A=3,B=4,C=2,D=1`B. `A=4,B=3,C=2,D=1`C. `A=1,B=2,C=3,D=4`D. `A=2,B=3,C=4,D=1` |
| Answer» Correct Answer - B | |
| 359. |
How many gametes contain a dominant mutation, if 1/1500 babies show the new phenotypes?A. `(1)/(15000)`B. `(1)/(20000)`C. `(1)/(30000)`D. `(1)/(45000)` |
| Answer» Correct Answer - C | |
| 360. |
In halpoids, both recessive and dominant limitations express themselves becauseA. There is one allele for each traitB. There are two alleles for each characterC. There are two genes for each characterD. There are many alleles for each trait |
| Answer» Correct Answer - A | |
| 361. |
Ishiara charts are used by ophthalamologist for detectingA. Eye infectionB. Night blindnessC. Colour blindnessD. Fingler prints |
| Answer» Correct Answer - C | |
| 362. |
Sickel cell anaemia is aA. Metabolic disorderB. Genetic disorderC. Degenerative disorderD. Pathogenic disorder |
| Answer» Correct Answer - B | |
| 363. |
Episome may be a factor in :A. Co dominanceB. incomplete dominanceC. cytoplasmic inheriteranceD. chromosomes inheritence |
| Answer» Correct Answer - C | |
| 364. |
Which one is an example of cytoplasmic inheritance ?A. Sterile pollenB. Height in peaC. flower colour in peaD. eye colour in fruitfly |
| Answer» Correct Answer - A | |
| 365. |
what are episomes ?A. Extrachromosomal hereditary materiral of bacteria associted with nucleoidB. Modification of the cell membrane performathing respirationC. Heredityary DNA of bacterial cellD. None of the above |
| Answer» Correct Answer - A | |
| 366. |
When can chromosomes be counted best?A. MetaphaseB. Early prophaseC. Mid prophaseD. Late prophase |
| Answer» Correct Answer - A | |
| 367. |
Which external trait determines sex correctlyA. Female Cockroach- Anal cerciB. Male Shark- claspers on plevic finsC. Female Ascaris- Curved p[osterior endD. Male Frog-Copluatory poad on first digit of hind limb |
| Answer» Correct Answer - B | |
| 368. |
When an additional copy of a chromosome is included in an individual, the condition is calledA. MonosomyB. TrisomyC. TriploidD. None of these |
| Answer» Correct Answer - B | |
| 369. |
The loss of one single chromosome creates a condition called:A. Hap[loidyB. NullisonmytC. TrisomyD. Monosomy. |
| Answer» Correct Answer - D | |
| 370. |
Loss of chromosome segment is due toA. PolyploidyB. DeletionC. InversionD. Transversion |
| Answer» Correct Answer - B | |
| 371. |
Human genonme project lead to the development ofA. BionformaticsB. BiotechnologyC. BiomonitoringD. Biosystematics |
| Answer» Correct Answer - A | |
| 372. |
The loss of one single chromosome creates a condition called:A. TrisomyB. nullisomyC. monosomyD. haploid |
| Answer» Correct Answer - C | |
| 373. |
Which condition zygotic cell will from normal human female childA. XX chromosomesB. Y- chromosomeC. X-chromosomeD. Xychromosomes |
| Answer» Correct Answer - A | |
| 374. |
A colour blind girl is rare because she will be only when :A. Her mother and meternal grand father were colour blindB. Her father and maternal grand father were colour blindC. Her mother is colour blind and father has normal visionD. Parents have normal vision but grand parents were colour blind. |
| Answer» Correct Answer - B | |
| 375. |
The chromosome constitution 2n-2 of an organism represents :A. MonosomicB. nullisomicC. haploidD. trisomic |
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Answer» Correct Answer - D Nullisomic= 2n-2 Monosomic =2n-1 Trisomic=2n+1 haploid =n |
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| 376. |
The chromosome sconstution 2n-2 of an organism represents :A. haploidB. TrisomicC. NullisomicD. monosomic |
| Answer» Correct Answer - C | |
| 377. |
Mutation is more common when it is present inA. Recessive conditionB. Dominant conditionC. Constant in populationD. None of these |
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Answer» Correct Answer - B Mutation is more common when it is present in dominant condition. The reason is that the dominant mutant gene can express in both homozygous and heterozygous conditions. |
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| 378. |
When chromosome breaks and the two fragments join together after rotating by `180^(@)` is called :A. Deletion of one nucleotideB. DuplicaitonC. inversionD. interstitial translocation |
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Answer» Correct Answer - C Inversions occur when there are two breaks in a chromosome and the intercalary segment runites in a reverse order by rotating at 1800 |
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| 379. |
Polyploidy can be induced the application ofA. auxinB. kinetinC. colchicineD. Ethylene |
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Answer» Correct Answer - C Polyploidy can be induced by the application of colchicine. It is a posisonous chemical, isolated from seeds and bulbs of autumn crocus (Colchicum autumnale). It blocks spindle formatin and thus, inhibits the movement of sister chromatids to the opposite poles. the resulting nucleus includes all the chromitids. As a result, the chromosome number of the cell is doubled, which leads topolyploidy. |
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| 380. |
Choose the incoorrect statement.A. In grasshoppers, besides autosomes males have only one X-chromosome, whereas females have a pair of X-chromosomesB. In XY type of sex-determinatin, both males and females have same number of chromosomesC. In Drosophila, males have one X and one Y chromosome, whereas females have a pair of X-chromosome besides autosomesD. In Birds, females have one Z and one. W- chromosomes, whereas males have a pair of Z-chromosomes besides autosomes |
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Answer» Correct Answer - C IN XO type of sex determinition in insects, all sperm do not bear X-chromosomes. Males have only one X-chromosome and female have pair of X-chromosomes. Egge fertilised by sperms having X-chromosome become females and those fetilised bysperms that do not have X-chromosome become males. |
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| 381. |
Which of the following factor was used by Alfred Sturtevant to measure the distance between the genes and mapped their pasition on the chromosomeA. Total recombinationB. Frequency of recombinationC. Parental gene combinationD. Non-paretal combination |
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Answer» Correct Answer - B Alfred Sturtevant used the frequncy of recombination between gene pairs on the same chromosops.s a meanore of the distance between genes and mapped their position on the chromosome. |
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| 382. |
Alfred sturtevant to measure the distance between genes and mapped their position on the chromosome used the frequency ofA. recombination between gene pairs on the two different chromosomesB. Recombination between gene pairs on the same chromosomeC. Gene pairing on two different chromosomesD. Gene pairing on the same chromosome |
| Answer» Correct Answer - B | |
| 383. |
Length of X chromosome isA. `8.5-9.5 mu`B. `7.5-8.0 mu`C. `6.5-7.5 mu`D. `5.0-5.5 mu` |
| Answer» Correct Answer - D | |
| 384. |
In heredity ,the genes are obainted from :A. FatherB. MotherC. Both of theseD. none of these |
| Answer» Correct Answer - C | |
| 385. |
Length of Y-chromosome isA. 2.0 `mu`B. 3.0 `mu`C. 4.0 `mu`D. 5.0 `mu` |
| Answer» Correct Answer - A | |
| 386. |
The ultimate biological unit which controls heredity, is called :A. GenotypeB. ganeC. GenomeD. Chromosome |
| Answer» Correct Answer - B | |
| 387. |
X-chromosome isA. TelocentricB. MetacentricC. AcrocentricD. Acentric |
| Answer» Correct Answer - B | |
| 388. |
Human Y-chromosome is :A. AscrocentricB. TelocentricC. SubmetacentricD. Acentric |
| Answer» Correct Answer - A | |
| 389. |
Percentage of colour blindness in white male population isA. `1.5%`B. `2.5%`C. `5.9%`D. 0.08 |
| Answer» Correct Answer - D | |
| 390. |
Percentage of colur blindness in white female polulation isA. `4.5%`B. `2.3%`C. `0.5%`D. Zero % |
| Answer» Correct Answer - C | |
| 391. |
Barr body occurs inA. Interphase cell of female mammalB. Interphase cell of male mammalC. Prophase cell of male mammalD. Prophase cell of female mammal |
| Answer» Correct Answer - A | |
| 392. |
XY chromosomes areA. HomomorphicB. HeteromorphicC. HeterologousD. Both B and C |
| Answer» Correct Answer - B | |
| 393. |
Theroy of heterogamesiss for sex determination was proposed byA. MorganB. DarwinC. CorrensD. Bridges |
| Answer» Correct Answer - C | |
| 394. |
Strength of linkage is related inversely to distance betweenA. GenesB. ChromatidsC. ChromosomesD. Telomeres |
| Answer» Correct Answer - A | |
| 395. |
Role of chromosomes in sex determination was proposed byA. Sutton and BoveriB. HenkingC. Mc clungD. Morgan |
| Answer» Correct Answer - C | |
| 396. |
The scientific term not related to the primary conastriction of a ch romosome is :A. kinomereB. centromereC. chromomereD. Kinetochre |
| Answer» Correct Answer - C | |
| 397. |
Who stated that Y-chromosome is heterochromatic and plays no significant role in sex determination?A. CB BridgesB. PetersonC. MendelD. Morgan |
| Answer» Correct Answer - B | |
| 398. |
the function of centrosomesA. Duplicataion of chromosomesB. Movement of chromosomesC. Duplication of DNAD. Formation of RNA |
| Answer» Correct Answer - B | |
| 399. |
Each cromosome carries a distinct region which plays an important role in the chromosome movement during cell sivision ,this region is :A. telemereB. chromatidC. centrioleD. Centromere |
| Answer» Correct Answer - D | |
| 400. |
Each chromosome pair has a distinct morphology with regard to :A. The number of genes presentB. Chromosomes thickness and lengthC. amount of DNA and intensity of stainingD. Relative length of arms and position and centromere |
| Answer» Correct Answer - D | |