Animal Husbandry
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NEET DIGITAL LIBRARY
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262397 Homozygous pure lines in cattle can be obtained by [NEET-2017]

1 Mating of related individuals of the same breed.
2 Mating of unrelated individuals of the same breed.
3 Mating of individuals of different breed.
4 Mating of individuals of different species.
NCERT
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262398 The results of inbreeding are not always desirable because

1 the selected superior bull produces progeny with improved traits
2 crossing the related animals of the same breed produces pure lines
3 the progeny exhibits increased the frequency of both undesirable and desirable genes
4 it increases milk production in cows
Page 167
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262399 Match the Column-I with Column-II. Select the correct option.

























Column-I



Column-II



(A) Outbreeding



(1)  Mating of animals of the same breed but no common ancestors for 4–6 generations.



(B) Outcrossing



(2)  Mating of animals of different species.



(C) Crossbreeding



(3)  Includes outcrossing and cross-breeding.



(D) Interspecific hybridization



(4)  Mating of superior males and females of different breeds.


1 A = 1, B = 4, C = 2, D = 3
2 A = 4, B = 1, C = 2, D = 3
3 A = 4, B = 2, C = 1, D = 3
4 A = 3, B = 1, C = 4, D = 2
Page 168
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262400 Most of the mating done by animal breeders are outcrossing because (A) it reduces the expression of harmful genes by masking them in heterozygous genotype (B) it helps in bringing the desirable traits into the progeny (C) it increases homozygosity (D) it produces pure lines Select the correct option.

1 A, B, C, D are true
2 A and B are true
3 A and D are true
4 C and D are true
Page 168
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STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262397 Homozygous pure lines in cattle can be obtained by [NEET-2017]

1 Mating of related individuals of the same breed.
2 Mating of unrelated individuals of the same breed.
3 Mating of individuals of different breed.
4 Mating of individuals of different species.
NCERT
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262398 The results of inbreeding are not always desirable because

1 the selected superior bull produces progeny with improved traits
2 crossing the related animals of the same breed produces pure lines
3 the progeny exhibits increased the frequency of both undesirable and desirable genes
4 it increases milk production in cows
Page 167
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262399 Match the Column-I with Column-II. Select the correct option.

























Column-I



Column-II



(A) Outbreeding



(1)  Mating of animals of the same breed but no common ancestors for 4–6 generations.



(B) Outcrossing



(2)  Mating of animals of different species.



(C) Crossbreeding



(3)  Includes outcrossing and cross-breeding.



(D) Interspecific hybridization



(4)  Mating of superior males and females of different breeds.


1 A = 1, B = 4, C = 2, D = 3
2 A = 4, B = 1, C = 2, D = 3
3 A = 4, B = 2, C = 1, D = 3
4 A = 3, B = 1, C = 4, D = 2
Page 168
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262400 Most of the mating done by animal breeders are outcrossing because (A) it reduces the expression of harmful genes by masking them in heterozygous genotype (B) it helps in bringing the desirable traits into the progeny (C) it increases homozygosity (D) it produces pure lines Select the correct option.

1 A, B, C, D are true
2 A and B are true
3 A and D are true
4 C and D are true
Page 168
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STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262397 Homozygous pure lines in cattle can be obtained by [NEET-2017]

1 Mating of related individuals of the same breed.
2 Mating of unrelated individuals of the same breed.
3 Mating of individuals of different breed.
4 Mating of individuals of different species.
NCERT
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262398 The results of inbreeding are not always desirable because

1 the selected superior bull produces progeny with improved traits
2 crossing the related animals of the same breed produces pure lines
3 the progeny exhibits increased the frequency of both undesirable and desirable genes
4 it increases milk production in cows
Page 167
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262399 Match the Column-I with Column-II. Select the correct option.

























Column-I



Column-II



(A) Outbreeding



(1)  Mating of animals of the same breed but no common ancestors for 4–6 generations.



(B) Outcrossing



(2)  Mating of animals of different species.



(C) Crossbreeding



(3)  Includes outcrossing and cross-breeding.



(D) Interspecific hybridization



(4)  Mating of superior males and females of different breeds.


1 A = 1, B = 4, C = 2, D = 3
2 A = 4, B = 1, C = 2, D = 3
3 A = 4, B = 2, C = 1, D = 3
4 A = 3, B = 1, C = 4, D = 2
Page 168
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262400 Most of the mating done by animal breeders are outcrossing because (A) it reduces the expression of harmful genes by masking them in heterozygous genotype (B) it helps in bringing the desirable traits into the progeny (C) it increases homozygosity (D) it produces pure lines Select the correct option.

1 A, B, C, D are true
2 A and B are true
3 A and D are true
4 C and D are true
Page 168
NEET DIGITAL LIBRARY
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262397 Homozygous pure lines in cattle can be obtained by [NEET-2017]

1 Mating of related individuals of the same breed.
2 Mating of unrelated individuals of the same breed.
3 Mating of individuals of different breed.
4 Mating of individuals of different species.
NCERT
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262398 The results of inbreeding are not always desirable because

1 the selected superior bull produces progeny with improved traits
2 crossing the related animals of the same breed produces pure lines
3 the progeny exhibits increased the frequency of both undesirable and desirable genes
4 it increases milk production in cows
Page 167
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262399 Match the Column-I with Column-II. Select the correct option.

























Column-I



Column-II



(A) Outbreeding



(1)  Mating of animals of the same breed but no common ancestors for 4–6 generations.



(B) Outcrossing



(2)  Mating of animals of different species.



(C) Crossbreeding



(3)  Includes outcrossing and cross-breeding.



(D) Interspecific hybridization



(4)  Mating of superior males and females of different breeds.


1 A = 1, B = 4, C = 2, D = 3
2 A = 4, B = 1, C = 2, D = 3
3 A = 4, B = 2, C = 1, D = 3
4 A = 3, B = 1, C = 4, D = 2
Page 168
STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

262400 Most of the mating done by animal breeders are outcrossing because (A) it reduces the expression of harmful genes by masking them in heterozygous genotype (B) it helps in bringing the desirable traits into the progeny (C) it increases homozygosity (D) it produces pure lines Select the correct option.

1 A, B, C, D are true
2 A and B are true
3 A and D are true
4 C and D are true
Page 168
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