InterviewSolution
Saved Bookmarks
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.
| 651. |
A normal spontaneous rate for a single gene is one mutation in every… replicationA. `10^(3)-10^(5)`B. `10^(5)-10^(7)`C. `10^(6)-106(9)`D. `10^(7)-10^(10)` |
| Answer» Correct Answer - B | |
| 652. |
Mutations do not result inA. Death of individualB. Better progeniesC. Hybrid vigourD. Change in the genetic constitution of cell |
| Answer» Correct Answer - C | |
| 653. |
The smallest element or sub division of a gene, which can be affected by a mutation isA. MutonB. ReconC. InterferonD. Cistron |
| Answer» Correct Answer - A | |
| 654. |
the localization of a gentic locus to a particulart chromosomal region using linkage or molecular analysis is known as:A. gene cloningB. gene isolationC. gene mappingD. gene splicing |
| Answer» Correct Answer - C | |
| 655. |
Visible exression of the gentic phenmenon of croosing over is called :A. recombinationB. CondensationC. chiasmataD. spiralzation |
| Answer» Correct Answer - C | |
| 656. |
Cis- trans expression of genes is an example of :A. mutationB. intergenic crossing over C. cytoplasmic inheritanceD. intragennic crossing over |
| Answer» Correct Answer - B | |
| 657. |
Cis- trans expression of genes is an example of :A. mutationB. intergenic crossing overC. cytoplasmic inheritanceD. intragennic crossing over |
| Answer» Correct Answer - B | |
| 658. |
Crossing over is advantageous because it brings aboutA. linkageB. stabiltyC. varationsD. inbreeding |
| Answer» Correct Answer - C | |
| 659. |
the crossing over frenquency is proportinal to:A. recombinant phenotypic frequencyB. haploid number of chromosomesC. diploid number of chromosomesD. genotypic frequency |
| Answer» Correct Answer - A | |
| 660. |
Peacock shows following genotypeA. XX-XYB. XYC. ZZD. ZW |
| Answer» Correct Answer - C | |
| 661. |
the probability of a cross over occurring between two gene loci si proportinal to :A. Activity of two lociB. distance between two lociC. how far the loci are from the centromereD. how tightly the chromosomes are paked in the nucleus |
| Answer» Correct Answer - B | |
| 662. |
Assume that a cross over and resulting chiasma occurred between two gene loci 100% of the time. What would be the per centage of recombinant chromosomes among the progeny?A. 1B. 0.5C. 0.25D. 0.75 |
| Answer» Correct Answer - B | |
| 663. |
When white eyed and miniature winged Drosophila meloaogaster is crossed with its wild type it produces following percent of recombinationsA. `1.3%`B. `37.2%`C. `62.8%`D. `98.7%` |
| Answer» Correct Answer - B | |
| 664. |
In a linear chromosome map, distances between 4 loci is as follows, a-b 10%, a-d 3%, b-c 4% and a-c 6%. The cross over frequency between c and d isA. 4 to 12%B. 3 or 9%C. 0.09D. 0.03 |
| Answer» Correct Answer - B | |
| 665. |
In Drosophila, red- eyed colour is dominant to white and is sex- linked, what results would you expect from a cross between a red- eyed male and a white-eyed female?A. All females red -eyed and males white-eyedB. All males and female red-eyedC. All females white-eyed and makes red-eyed and males red-eyedD. All offsprigs white-eyed |
| Answer» Correct Answer - A | |
| 666. |
Cris cross inhertiance in Drosophila led to the discovery ofA. Law of independent assortmentB. Extrachromosomal inheritanceC. Lethal geneD. Sex-linked inheritance |
| Answer» Correct Answer - D | |
| 667. |
Conditions of a karyotype `2n pm 1 and 2n pm 2` are calledA. AneuploidyB. polyploidyC. AutopolyloidyD. Monosomy |
| Answer» Correct Answer - A | |
| 668. |
Conditions of a karyotype `2n pm 1 and 2n pm 2` are calledA. AneuploidyB. MonsomyC. AutopolyploidyD. Polyploidy |
| Answer» Correct Answer - A | |
| 669. |
Beard appears only after attaining maturity as the geneA. Expression is delayedB. Expression occurs only in presence of male hormonesC. Remains dominant in childhoodD. All the above |
| Answer» Correct Answer - B | |
| 670. |
The haploid content of human DNA isA. `3.3xx10^(6)` bpB. `3.3xx10^(9)`bpC. `4.6xx10^(6)`bpD. `6.6xx10^(9)`bp |
| Answer» Correct Answer - B | |
| 671. |
Frequncy of crossing over will be relatively more if :A. Distance between two genes is lessB. distance between two genes is moreC. linked genes are moreD. both (a) and (C ) |
| Answer» Correct Answer - B | |
| 672. |
Presence of beard in man isA. Sex limited characterB. Sex linfluenced characterC. Y- linked characterD. X-linked character |
| Answer» Correct Answer - B | |
| 673. |
Under electron microscope , chromatin fibres apperar like beads in a string .The beads are appear like beads in a string. The beads areA. ChromomeresB. NucleosomesC. SolenoidsD. Chromonemas |
| Answer» Correct Answer - B | |
| 674. |
Structural elements of chromatin isA. HistoneB. NucleosomesC. Nuclear matrixD. Acid protein and DNA |
| Answer» Correct Answer - B | |
| 675. |
chromatin consists of :A. DNAB. RNAC. DNA and histonesD. RNA and histines |
| Answer» Correct Answer - C | |
| 676. |
DNA is associated with highly basic proteins called :A. albuminsB. histonesC. nonhistonesD. both (a) and (b) correct |
| Answer» Correct Answer - B | |
| 677. |
In eukaryotes , basis stru8ural unit made of histone and DNA:A. nucleolusB. Piuff ringC. nucleosomeD. chromosome |
| Answer» Correct Answer - C | |
| 678. |
Histones are:A. MucoproteinsB. glycoproteinsC. basic proteinsD. acidic proteins |
| Answer» Correct Answer - C | |
| 679. |
Histone ,the chromosomal protein completety lack one of the following amio acids :A. lysineB. ArginineC. HistidineD. Tryptophan |
| Answer» Correct Answer - D | |
| 680. |
"Nu body" was shown byA. WoodockB. JohassenC. darlingtonD. Temain and Baltimore |
| Answer» Correct Answer - A | |
| 681. |
Choose the correct combination A. a-1,b-4,c-2,d-3B. a-2,b-3,c-1,d-4C. a-3,b-2,c-1,d-4D. a-2,b-3,c-4,d-1 |
| Answer» Correct Answer - D | |
| 682. |
Histones are present in :A. LysosomesB. LysosomesC. nucleosomesD. cell membrane |
| Answer» Correct Answer - C | |
| 683. |
which amino acids are present in histones ?A. Arginine and lysineB. Lysine and histidineC. Valine and histidineD. Arginine and histidine |
| Answer» Correct Answer - A | |
| 684. |
the basic set of vhromosomes in an organism is known is known as :A. genomeB. idiogramC. karyotypeD. plasmosome |
| Answer» Correct Answer - A | |
| 685. |
Solenoid is atructure ofA. Nucleosomal organisation with 10 nm thicknessB. Condenese chromatin fibre with 30 nm diameterC. Highly condensed form of chromatid with 300 nm thicknessD. Well organised chromatid with 700 nm thickness |
| Answer» Correct Answer - B | |
| 686. |
the major chemical components of chromosome are DNA ,RNA ,histones and nonhistones protein Besides ,there is sone very important inoranic chemcal,which si :A. ironB. calciumC. chromiumD. magnesium |
| Answer» Correct Answer - B | |
| 687. |
The length of DNA molecile greatly exceeds the dimensions of the nucleus in eukaryotic cell. How is this DNA accommodatedA. Dnase digestionB. super -coiling ion nucleosomeC. Deletion of nonessent ganesD. through eleimination of repetiitve DNA |
| Answer» Correct Answer - B | |
| 688. |
Solenoid is a strcture of :A. Condensed chromatin fiber with 30 nm diameterB. Nucleosomal organization with 10 nm thicknessC. Well organized chromatid with 700 nm thicknessD. Well organized chromosome with 1400 nm thickness |
| Answer» Correct Answer - A | |
| 689. |
The most likely reason for the development of resistence against pesticides in insects damaging a crop isA. Genetic recombinationB. Acquired heritable changesC. Random mutationsD. Directed mutations |
| Answer» Correct Answer - C | |
| 690. |
The point mutation occurs due toA. Change in the base pairs of DNAB. Change in a single base pair of DNAC. Alteration in the base pairs of DNAD. Aberrations in the base pairs of DNA |
| Answer» Correct Answer - B | |
| 691. |
A chromosomes carry the centromere at one of the ends is called :A. acentricB. acrocentricC. telocentricD. meracentric |
| Answer» Correct Answer - C | |
| 692. |
IN both Xoand XY type of sex determining mechanisms, males produce two different types of gametesA. Either with or without X-chromosomeB. Some gametes with X-chromosome and some with Y-chromosomeC. Both (a) and (b)D. None of the above |
| Answer» Correct Answer - C | |
| 693. |
Number of chromosomes are formed as a result of :A. Disjunction of bivalentsB. Pairing identical chromosomesC. Tranverse division of centromereD. longitudinal spitting of centromere |
| Answer» Correct Answer - C | |
| 694. |
The nucleoprotion stutures that occour aat the ends of the chromosomes are :A. SatellitesB. telomeresC. centromeresD. centrosomes |
| Answer» Correct Answer - B | |
| 695. |
the chromosome associted with sex determinaation is known as :A. AllosomesB. AutosomesC. Accessory chromosomesD. Determinant chromosomes |
| Answer» Correct Answer - A | |
| 696. |
The terminal end of chromosme is termed :A. telomereB. centromereC. metamereD. chromomere |
| Answer» Correct Answer - A | |
| 697. |
Sex chromosome are also knon as :A. RibosomesB. AutosomesC. mesosomesD. heterosomes |
| Answer» Correct Answer - D | |
| 698. |
L- shaped chromosomes are termed :A. telocentricsB. SubmetacentricsC. acrocentricsD. sex chromosomes |
| Answer» Correct Answer - B | |
| 699. |
X-chromosome is designated as sex chromosome due to its involvement inA. Determination of sexB. Producing female childC. Both (a) and (b)D. None of these |
| Answer» Correct Answer - A | |
| 700. |
A typical nucleosome contains :A. 400 bp of DNA helixB. 100 bp of DNA helixC. 300 bp of DNA helixD. 200 bp of DNA helix |
| Answer» Correct Answer - D | |