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Home » GAT Subject » Aptitude Test - 48
Hassan
1. If a tall plant is crossed with a dwarf plant the cross is called:
A. Test cross
B. Backcross
C. Green colour of cotyledons
D. Test cross
2. If a genotype is not known it is crossed with recessive parent to reveal what is hidden then the cross is known as:
A. Backcross
B. Monohydrid cross
C. Test cross
D. Backcross
3.Who formulated chromosomal theory of inheritance:
A. Sutton
B. Morgan
C. Bateson
D. Sutton
4. A cross between F1 hybrids with either of the parent is called:
A. Back-cross
B. Test-cross
C. Reverse-cross
D. Back-cross
5. Which of these terms indicate a pair of contrasting characters or factors
A. Allele
B. Phenotype
C. Homozygous
D. Allele
6. In case red flower colour is dominant to white flower colour which of these statements is correct:
A. All red-flowered plants from red flowered plants
B. A few red-flowered plants from red-flowered plants
C. Ration of red-flowered plants from white-flowered hybrid plants is 1:1
D. All red-flowered plants from red flowered plants
7.Why pea plants were most suitable for Mendel's experiments than dogs because:
A. There were no pidegree records of dogs
B. Pea plants can be selfed
C. All pea plants have two number of chromosomes
D. There were no pidegree records of dogs
8. The first crop plant genome sequenced
A. Maize
B. Wheat
C. Rice
D. Maize
9.Urea and Formamide can:
A. Increase Tm of DNA
B. Decrease the Tm of DNA
C. Helps faster re-annealing of DNA
D. Increase Tm of DNA
10.The first transgenic plant to be produced:
A. Rice
B. Maize
C. Cotton
D. Rice
11.Explants used for tissue culture can be taken from:
A. Bud
B. Root tip
C. Nodal stem segments
D. Bud
12.A low auxin:cytokinin ratio leads to:
A. Shoot formation
B. Root formation
C. Fruit formation
D. Shoot formation
13. Klenow fragment is derived from:
A. DNA Pol-I
B. RNA Pol II
C. DNA Ligase
D. DNA Pol-I
14.The year of launching of Human Genome Project and completion of the rough draft of the sequence was in:
A. 1992 and 2000
B. 1990 and 2000
C. 1989 and 2001
D. 1992 and 2000
15. The main difference between a plasmid and an episome is:
A. Plasmid is circular episome is linear
B. Episome is circular, plasmid is linear
C. Plasmid can be insert into host genome, episomes are not
D. Plasmid is circular episome is linear
16. What is the final product of the RNaseH method?
A. blunt ended dsDNA
B. staggered dsDNA at both ends
C. staggered dsDNA at 3’ end
D. blunt ended dsDNA
17.The loop region is single stranded. It can be cleaved by using which enzyme?
A. Exonuclease
B. S1 nuclease
C. RNaseH
D. Exonuclease
18. What is the second primer in the case of 5’ RACE?
A. Internal primer
B. Oligo-dA sequence
C. Adaptor-oligo-dT primer
D. Internal primer
19. DNA sequencing is done by
A. Maxam Gilbert method
B. Sanger dideoxy method
C. Both a and b
D. Maxam Gilbert method
20. DNA staining is done by
A. Cystal violet
B. Giemsa staining
C. Methylene blue
D. Cystal violet
21. Use of alkaline phosphatase is to
A. remove terminal phosphates from 3’end
B. remove terminal phosphates from 5’end
C. remove terminal phosphate from both end
D. remove terminal phosphates from 3’end
22.Taq polymerase is used in PCR because of its
A. low thermal stability
B. high fidelity
C. high speed
D. low thermal stability
23.Nick translation is done by
A. DNA polymerase I
B. DNA polymerase II
C. DNA ligase
D. DNA polymerase I
24. Introduction of recombinant DNA into bacterial cell by using current is called
A. Transformation
B. Electroporation
C. Transformation
D. Transformation
25. Telomeric sequences are found in
A. HAC
B. BAC
C. YAC
D. HAC
26. The uptake of plasmid DNA into bacterial cell is facilitated in the presence of
A. Calcium Chloride
B. Magnesium Chloride
C. Potassium Chloride
D. Calcium Chloride
27. Young's modulus is defined as the ratio of
A. volumetric stress and volumetric strain
B. lateral stress and lateral strain
C. longitudinal stress and longitudinal strain
D. volumetric stress and volumetric strain
28.Deformation per unit length in the direction of force is known as
A. strain
B. lateral strain
C. linear strain
D. strain
29.The materials having same elastic properties in all directions are called
A. ideal materials
B. uniform materials
C. isotropic materials
D. ideal materials
30. A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The extensions noted with increasing loads will behave as under
A. uniform throughout
B. increase uniformly
C. first increase and then decrease
D. uniform throughout
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