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.
| 701. |
the long and short arms of chromosome are designated respectively as :A. q and p armsB. p and q armsC. m and p armsD. l and s arms |
| Answer» Correct Answer - A | |
| 702. |
Chromosome with a median centromere and equal arms is :A. MetacentricB. acrocentricC. submetacentricD. telocentric |
| Answer» Correct Answer - A | |
| 703. |
Chromosomes can be classified by the postion of the following sparating the two arms :A. geneB. spindleC. nucleousD. centromere |
| Answer» Correct Answer - D | |
| 704. |
Triticale is an example ofA. AutopolyoidyB. All opolypolidyC. AneuploidyD. None of above |
| Answer» Correct Answer - B | |
| 705. |
The common bread wheat has chromosomesA. 14B. 21C. 28D. 42 |
| Answer» Correct Answer - D | |
| 706. |
In humans ,dosage compensationA. Brings about euqlity in X-cided gebe oridyctsB. Brubgs aviyt equality in y-coded gene productsC. Brings about determination of sexD. Is not involved in any of the above. |
| Answer» Correct Answer - A | |
| 707. |
Which of the following will be colour blind ?A. XYB. `X^(c )X^(c )`C. `X^(c )X`D. XX |
| Answer» Correct Answer - B | |
| 708. |
Which one of the following is responsible for mental abnrmalites in humans?A. XXX and XYB. XX and XXXC. XO and XXXD. XX and XO |
| Answer» Correct Answer - C | |
| 709. |
In humans ,sex is determined byA. Y-chromosomesB. X--chroiosomeC. A and X-chromosomesD. A and Y-chromosomes |
| Answer» Correct Answer - A | |
| 710. |
Haemophilia is more common in males because it is aA. Recessive character carried by Y-chromosomeB. Dominant charchter carried by Y-chromosomeC. Dominant trait carried by X- chromosomeD. Recessuve trait carried by X-chromosome. |
| Answer» Correct Answer - D | |
| 711. |
Sex is determined in human beingsA. By ovumB. At time of fetilizationC. 40 days after fertilizationD. Seventh to eigth week when genitals differentiate in foetus. |
| Answer» Correct Answer - B | |
| 712. |
In which mode of inheritance do you except more maternal influence among the offspringA. X- linkedB. Y--linkedC. cytoplasmicD. Autosomal |
| Answer» Correct Answer - C | |
| 713. |
Maternal inheritance is due to the genes present in :A. NucleusB. lysosomesC. NucleoplasmD. Mitochondria |
| Answer» Correct Answer - D | |
| 714. |
Extraanclear inhereritance is a condequnce of presence of presence of genes in :A. Lysosomes and ribosomesB. Ribosomes and choloplastC. Mitochondria and chloroplastD. Endoplasmic reticalum and mitochondria |
| Answer» Correct Answer - C | |
| 715. |
The organelles responsibl,e for cytopalasmic inheritance among eukaryotes are:A. choroplastes and lysosomesB. lysosomes and mitrochrondriaC. choloplastes and mitrochrodiraD. mitochondira and golgi complex |
| Answer» Correct Answer - C | |
| 716. |
Morgan observed that the two genesA. Did not segregate independently to each otherB. Segregated independently to each otherC. F2 ratio was same as 9:3:3:1D. Both (b) and (c) |
| Answer» Correct Answer - A | |
| 717. |
Cytoplamic genes were first observed in :A. pisum sativamB. Mirabilis jalapaC. lathyrus odoratusD. neurospore crassa |
| Answer» Correct Answer - B | |
| 718. |
Which one is an example of cytoplasmic inheritance ?A. OenotheraB. Coccinia indicaC. VallisneriaD. Sphaerocarpus |
| Answer» Correct Answer - A | |
| 719. |
Shell coiling in Limnaea is an example ofA. Maternal inheritanceB. Biparental inheritanceC. PredeterminationD. Sphaerocarpus |
| Answer» Correct Answer - A | |
| 720. |
In limnaea shell coiling is due to :A. cytoplasmic inheritanceB. nuclear inheritanceC. recessive inheritanceD. none of these |
| Answer» Correct Answer - A | |
| 721. |
H.J. Muller ws awarded Nobel Prize forA. Protein synthesisB. Chemistry of nucleic acidsC. CancerD. X-ray induced mutations |
| Answer» Correct Answer - D | |
| 722. |
A woman with albinic father marries an ablinic man .The proportion of her progency isA. All normalB. All albinicC. 2 normal : 1 albinicD. 1 normal : 1 albinic. |
| Answer» Correct Answer - D | |
| 723. |
Sickle cell anaemia is a disroder caused due to change in chemical nature ofA. `alpha`chain of haemoglpobinB. `beta` chain of haemoglobinC. Plasma proteinD. Both `alpha and beta` chains of haemoglobin . |
| Answer» Correct Answer - B | |
| 724. |
Genome does not includeA. Mapping of fenesB. Analysis ogenomeC. Developmenet of GM cropsD. Analysis of gene products. |
| Answer» Correct Answer - C | |
| 725. |
Human genome project was started inA. 1989B. 1990C. 1992D. 1995 |
| Answer» Correct Answer - B | |
| 726. |
Which pteridophye has the maximum chromosome unmber?A. Ophioglossum reticulatumB. Azolla pinnataC. Lycopodium cernuumD. Selaginella apus |
| Answer» Correct Answer - A | |
| 727. |
If father is normal wile mother is carrieer of haemophiliaA. All female offspring will be carriersB. A male offspring has 50% chance of activ ediseaseC. A female offspring has 50% chance of active disseaseD. All female offsrping will be normal |
| Answer» Correct Answer - B | |
| 728. |
Haemophilia is aA. Genetic disorderB. Indfectious diseaseC. Metabolic disorderD. Occupational disease |
| Answer» Correct Answer - A | |
| 729. |
Incorrect statement with regard toi haemophilia isA. A single protein involved in clotting of blood is affectredeB. It is sex linked diseaseC. It is a recessive diseaseD. It is a doninant disease |
| Answer» Correct Answer - D | |
| 730. |
If both the parents are carriers of autosomal r recessive disorder thalassemia , what are the chances of pregnancy resulting in an affected childA. 1B. No chanceC. 0.5D. 0.25 |
| Answer» Correct Answer - D | |
| 731. |
If BB represent barr body and `Y_(0)`Y-body XXY or Klinefelters syndrome hasA. BB-1,`Y_(0)-0`B. BB-1,`Y_(0)-1`C. BB-0,`Y_(0)-1`D. BB-2,`Y_(0)-1` |
| Answer» Correct Answer - B | |
| 732. |
After crossing two plants the progeny was found to be male sterile due to maternal inheritance .The gene for male sterlity resides inA. NucleusB. Chloroplasts and lysosomesC. CytoplasmD. Mitochondria and Golgi complex |
| Answer» Correct Answer - D | |
| 733. |
Frequency of Down syndrome increases when the maternal age is :A. Below 35 yearsB. Above 35 yearsC. At the time of first pregnanacyD. After bearing three children |
| Answer» Correct Answer - B | |
| 734. |
Sudden and heritable change ina character of an organism is called:A. mutaionB. selectionC. heterosisD. inbreeding |
| Answer» Correct Answer - A | |
| 735. |
The small part of chromosomes beyond secondary constriction is called :A. StatelliteB. telomereC. centromereD. Kinetochore |
| Answer» Correct Answer - A | |
| 736. |
A colourblind man marries a woman with bormal sight who has no histroyh of colour blindess in her family. What is the probability of their grandson becoming blindA. 0.5B. 1C. nilD. 0.25 |
| Answer» Correct Answer - A | |
| 737. |
In this human pedigree the filled symbols represent the affected individuals .Identify the type of this pedigree A. Autosomal dominant inheritacneB. X-linked recesiveC. Autosomal recessive inheritacneD. X-linked dominant. |
| Answer» Correct Answer - C | |
| 738. |
A mutaion affectig many phenotypes is known asA. Polygenic mutationB. multiple allelesC. Pleeiotropic mutationD. polyploidy |
| Answer» Correct Answer - C | |
| 739. |
In case of incomplete linkage the parental combination appears inA. 1B. More than 50%C. 0.25D. Less than 25% |
| Answer» Correct Answer - B | |
| 740. |
A set of genes will be in a complete linkage when the progeny phenotypes for parental (P) and recombinant (R ) types are :A. P=0% ,R=100%B. P=50% ,R=50%C. P=50% ,R=50%D. P=100% ,R=0 % |
| Answer» Correct Answer - D | |
| 741. |
Which one of the following is a wrong statement regarding mutationsA. Deletion and insertion of base pairs cause frame - shift mutationsB. Cancer cells commonly show chromosomal aberrationsC. UV and single base are mutagensD. change in a single base pair of DNA does not cause mutation |
| Answer» Correct Answer - D | |
| 742. |
In cause of incomplate linkage , the parental combinations obatined if `F_(1)` generataion are:A. 0.25B. 1C. less than 50%D. more than 50% |
| Answer» Correct Answer - D | |
| 743. |
Which of the following mutational events is most difficult to detect?A. Auxotrophic mutationsB. Lethal mutatiionsC. Dominant mutationsD. Recessive non-lethal mutations |
| Answer» Correct Answer - D | |
| 744. |
Select the correct bases of DNA RNA and amino acid of beta chain causing sickle cell anaemiaA. CAC-GUGB. CAC-GTGC. CTC-GAGD. CAC-GTG |
| Answer» Correct Answer - B | |
| 745. |
Addition or deletion of a single nucleotide results in which type of mutationA. DeficiencyB. DuplicationC. Framesshift mutationD. None of these |
| Answer» Correct Answer - C | |
| 746. |
Deletion of cetain genes causeA. Gene mutationB. Chromosome mutationC. Gene modifictionD. Aneuploidy |
|
Answer» Correct Answer - B Each probability =`1//2` All the four probabilities =`(1//2()^(4) "or" 1/16` |
|
| 747. |
Which of the following statements are correct?I. Point mutations involve deletion of a part of chromosome. II.When a purine base is replaced by another purine and pyrimidine by another pyrimidine, it is transition. III.In frameshift mutations, one nitrogenous base is substituted by other. IV.When a purine is replaced by a pyrimidine and vice-versa, it is called transversion.A. I and IIB. II and IVC. III and IVD. Only IV |
| Answer» Correct Answer - B | |
| 748. |
Mutational events, which result in the deletion or addition of nucleotide bases in DNA, thereby causing gross changes.in the amino acid sequences of proteins are termed asA. Point mutationsB. Forward and backward mutationsC. TransversionsD. Frameshift mutations |
| Answer» Correct Answer - D | |
| 749. |
Concept of gene mapping was first suggested byA. MorganB. BridgesC. AveryD. Sturtevant |
| Answer» Correct Answer - C | |
| 750. |
In man, which of the following genotypes and phenotypes may be the correct result of aneuploidy in sex chromosomesA. 22 pairs+XXY malesB. 22 pairs+XX femalesC. 22 pairs +XY femalesD. None of these |
| Answer» Correct Answer - A | |