- Mendel’s finding were rediscovered in the year.
a)
1857 b) 1822 c) 1866 d) 1884 e)
1900
2. A cross
after changing the sex of parental plant is called:
a)
Back cross b) Test cross c) Reciprocal cross d) Monohybrid cross
e)
Dihybrid cross
3. Crossing of
F1 individuals back to their recessive parent is called:
a)
Back cross b) Test cross c) Reciprocal cross d) Monohybrid cross
e)
Dihybrid cross
4. Which among
the following ratio is called Mendelian monohybrid genotypic ratio?
a)
3:1 b) 9:3:3:1 c) 1:2:1 d) 1:1 e)
1:1:1:1
5. The
genotypic classes in the F2 of a dihybrid
a)
Two b) Three c) Five d) Eight e)
Nine
6. What
fraction of the dihybrid F2 will be exactly similar to the parents
or grand parents
a)
9/16 b) 2/16 c) 3/18 d) 5/8 e) ¾
7. What
percentage of the F2 dihybrid will be heterozygous for both
dominant trait?
a)
12.5% b) 25% c) 50% d) 75% e)
100%
8. The
genotypic and phenotypic ratio of the F2 where incomplete dominance
is operating
a) 3:1
& 1:2:1 b) 1:2:1 & 3:1 c) Both are 3:1 d) Both are 1:2:1 e)
1:1 & 1:1:1:1
9. The
phenomenon by which one gene influences the expression of another gene is
called:
a)
Epistasis b) Pleiotropy c) Co dominance d) Multiple allelism
e)
Incomplete dominance
10. In human
beings the ability to taste PTC is genetically controlled by a recessive gene ‘t’.
If the offspring is taster and mother is a non-taster the genotype of the
offspring and his father will be:
a)
Tt & tt b) tt & Tt c) Tt & Tt d) TT & TT e) tt & tt
11. The transfer
of genetic material from one cell to the other through the medium in which they
are living is called:
a)
Transformation b) Transduction c) Transcription d) Conjugation e)
Teminism
12. If
two genes c and d are linked and show 30% recombination the proportion of
gametes produced in F1 by a dihybrid
+ + derived from a cross between ++/++ and cd/cd would be:
cd
a)
++30; +60; ++d60; cd30 b) ++30;
cd70 c) ++70; cd30
d)
++30; cd30; +d15; c+15 e)
++15; cd15; +d30; c+30
13. In pedigree
analysis shaded square represents:
a)
Males with dominant trait b)
Males recessive trait
c)
Females with dominant trait d)
Females recessive trait e)
None of above
14. One among
the following is a rediscoveror of
mendelism:
a)
Bovery b) Morgan c) Bridges d) Correns e)
Bateson
15. Which among
the following pattern of inheritance strongly supported the theory of blended
inheritance?
a)
Incomplete dominance b)
Lethal genes c) Codominance
d)
Complete dominance e)
Multiple allelism
16. In human
beings pentadactyly and right handedness are dominant over polydactyly and left
handed conditions. How many types of progeny are
expected from a marriage of left handed pendactyl
man whose father had polydactyl with a left handed
polydactyl women
a)
One type b) Two types c) Three types d) Four types d)
Eight types
17. The removal
of stamen’s from a bisexual flower during cross tollination is called as
a)
Autogamy b) Hybridization c) Emasculation d) Bagging e)
None of these
18. Multiple
allelism is reported in the following characters
a)
Grain of wheat b) Skin colour of human beings c) Coat colour of rabbit
d) Coat
colour of dog e)
Flower colour of Mirabilis
19. The
ability of a gene to have many effects
is called
a)
Epistasis b) Pleiotropy c) Mutation d) Disjunction e)
Dominant apstasis
20. If the blood
group of both child and his father is B, what are the possible blood groups of
his mother?
a)
A, B or O b) B, or AB c) A,B or AB d) A,B, AB or O e) AB or O
21. From which
among the following types of inheritance Cumulative effect of genes was
reported:
a)
Multiple allelism b)
Incomplete dominance c)
Partial dominance
d)
Epistasis e)
Polygenic inheritance
22. If two autosomal; set with three x chromosome are
present (2A + xxx) in Drosophila, it is a:
a)
Normal male b) Super male c) Intersex d) Normal female e) Super female
23. Genic
balance theory was proposed by:
a) Sutton
and Boveri b)
Bridges c) Beadle and
Tatum
d) Morgan e)
Watson and Crick
24. Which among the
following ratio is called as complementary gene interaction ratio?
a) 12:3:1 b) 15:1 c) 9:7 d)
9:3:3:1 e) 1:4:6:4:1
25. Number of
different types of gametes produced by an individual having the genotype AAbbCCEeffDDGgPP
is:
a) 8
types b) 4 types c) 16 types d) 2 types e) 32 types
26. The first
artificial mutant was obtained in:
a)
Ankom sheep b)
Drosophila c) Neurospora d)
Pisum sativum e)
Lathyurus odoratus
27. Which among
the following vegetative character is not at all sex-linked?
a)
Haemophilia b)
Colour blindness c)
Hairy Pinna
d)
Sickle cell anaemia e)
All the above
28. Which among
the following cross is used to detect the genotype of F1 hybrid
a)
Back cross b) Test cross c) Reciprocal cross d) Monohybrid cross
e)
Dihybrid cross
29. If the
haploid number of chromosome is 25. Select the trisomic number.
a)
75 b) 26 c) 51 d) 49 e) 24
30. Blender
experiment was conducted by Hershey and Chase inorder to prove:
a)
Presence of mutation b) DNA as the
genetic material c) RNA as the genetic material
d)
DNA or RNA as the genetic materials e) None of these above
31. In human beings,
44A + xxy individuals are with:
a)
Klinefelter’s syndrome b) Turner’s
syndrome c) Criminal syndrome
d)
Patau’s syndrome e)
Down’s syndrome
32. The 2n-2
condition represents:
a)
Monosomy b) Nullisomy c) Trisomy d) Tetrasomy e)
Euploidy
33. The
formation of RNA from DNA template is called:
a)
Translation b) Transcription c) Transformation d) Teminism e) None
34. In E.coil
the macro unit replisome comprises the main enzymes of replication, which are:
a) Polymerases,
helicases & Ligase b) Polymerases
and primases only
c)
Helicases and Ligases only d)
Helicases, primases and Ligases
e)
Polymerases, primases and helicases
35. The
fundamental unit which can undergo mutation is:
a)
Recon b) Cistron c) Muton d) Gene e)
Replicon
36. The form of
mutant which can grow only in the supplemented medium is:
a)
Prototroph b) Necrotroph c) Auxotroph d) Autotroph e)
Heterotroph
37. Mendelian
monohybrid test cross ratio is:
a) 3:1 b) 1:1 c) 1:1:1:1 d) 1:2:1 e) 9:3:3:1
38. The
percentage of back cross progeny which are recombinant type:
a)
Nil b) 25 c) 12.5 d) 75 e) 50
39. Medelian
recombinations are due to:
a)
Crossing over b) Segregation of alleles c) Independent assortment of genes
d)
Co-dominance of alleles e) Incomplete
dominance of one or two alleles
40. The first
chromosomal map was constructed by:
a)
T.H Morgan b) Beadle and Tatum c)
H.Sturtevant
d)
Sutton and Boveri e) Francis Crik
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