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MEDIUM
ENGLISH
Agriculture
Concept of combining ability as measure of gene action was first proposed by___________________?
A
Sprague and Tatum (1942)
Option A
B
Cavalli (1952)
Option B
C
Mather (1956)
Option C
D
Wright (1951)
Option D
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MEDIUM
ENGLISH
Agriculture
In half diallel, total crosses among parents are equal to___________________?
A
P (P-1)/2
Option A
B
P (P-1)
Option B
C
P (P+1)/2
Option C
D
P2
Option D
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MEDIUM
ENGLISH
Agriculture
Estimation of correlation form error variances and covariance’s is________________?
A
Genotypic correlation
Option A
B
Phenotypic correlation
Option B
C
Simple correlation
Option C
D
Environmental correlation
Option D
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MEDIUM
ENGLISH
Agriculture
Ratio of genotypic covariance to the phenotypic covariance is____________________?
A
Heritability (b.s)
Option A
B
Genetic gain
Option B
C
Co-heritability
Option C
D
Genetic advance
Option D
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MEDIUM
ENGLISH
Agriculture
Jumping gene was first discovered in______________________?
A
Maize
Option A
B
Barley
Option B
C
Oenothera
Option C
D
Sorghum
Option D
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MEDIUM
ENGLISH
Agriculture
Erucic acid is found is_____________________?
A
Safflower
Option A
B
Til
Option B
C
Soybean
Option C
D
Mustard
Option D
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MEDIUM
ENGLISH
Agriculture
Neurotoxin is found in___________________?
A
Pearl millet
Option A
B
Berseem
Option B
C
Lucem
Option C
D
Sorghum
Option D
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MEDIUM
ENGLISH
Agriculture
Nutritional quality breeding deals with genetic improvement in__________________?
A
Oil
Option A
B
Protein
Option B
C
Vitamin
Option C
D
All the above
Option D
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MEDIUM
ENGLISH
Agriculture
In pulses, limiting amino acids include__________________?
A
Lysine
Option A
B
Threamine
Option B
C
Tryptophan
Option C
D
Methionine
Option D
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MEDIUM
ENGLISH
Agriculture
In green vegetables, the limiting amino acids is__________________?
A
Methionine
Option A
B
Arginine
Option B
C
Lysine
Option C
D
Trytophan
Option D
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MEDIUM
ENGLISH
Agriculture
Soybean contains___________________?
A
Typsin inhibitor
Option A
B
Goiterogens
Option B
C
Both A & B
Option C
D
Neither
Option D
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MEDIUM
ENGLISH
Agriculture
Dominance hypothesis of heterosis was first proposed by__________________?
A
Davenport (1908)
Option A
B
Shull (1914)
Option B
C
Bruce (1910)
Option C
D
Davis (1927)
Option D
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MEDIUM
ENGLISH
Agriculture
The term heterosis was coined by____________________?
A
Hull (1945)
Option A
B
Bruce (1910)
Option B
C
East (1908)
Option C
D
Shull (1914)
Option D
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MEDIUM
ENGLISH
Agriculture
In allogamous species, a true breeding line obtained by continuous inbreeding is__________________?
A
Hybrid
Option A
B
Top cross
Option B
C
Poly cross
Option C
D
Inbred
Option D
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MEDIUM
ENGLISH
Agriculture
Heterobeltiosis is estimated over the___________________?
A
Better parent
Option A
B
Mid parent
Option B
C
Standard parent
Option C
D
Popular variety
Option D
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MEDIUM
ENGLISH
Agriculture
Haploid plants have been produced by another culture in tomato by_________________?
A
Greshof and Doy (1972)
Option A
B
Tyagi and Prasad (1965)
Option B
C
Mehta and Upadhya (1960)
Option C
D
Singh (1960)
Option D
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MEDIUM
ENGLISH
Agriculture
Increased flower size has made tetraploidy important for___________________?
A
Plant breeder
Option A
B
Agronomist
Option B
C
Horticulturist
Option C
D
Pathologist
Option D
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MEDIUM
ENGLISH
Agriculture
An individual lacking only one chromosome from the diploid set is referred as_________________?
A
Nullisomic
Option A
B
Monosomic
Option B
C
Trisomic
Option C
D
Tetrasomic
Option D
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MEDIUM
ENGLISH
Agriculture
Blackeselee reported the first case of monoploid in__________________?
A
Datura
Option A
B
Rye
Option B
C
Brassica
Option C
D
Oat
Option D
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MEDIUM
ENGLISH
Agriculture
A gene which exhibits higher mutation rate than others is referred as___________________?
A
Mutator gene
Option A
B
Antimutalor gene
Option B
C
Mutable gene
Option C
D
Hot spot
Option D
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