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AGB Quiz 1

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1. The increasing order of efficiency of methods of selection is
a. Tandem selection < Independent culling < Selection index b. Tandem selection < Selection index < Independent culling c. Independent culling < Selection index < Tandem selection d. Independent culling < Tandem selection< Selection index
2. For carcass traits in sheep the practical aid to selection is
a. Family selection b. Progeny testing c. Sib selection d. Individual selection
3. In crossbreeding, the breeds used should be genetically:
a. Closer b. Distant c. Very close d. All of the above
4. What is the raw material for herd improvement?
a. Gene frequency b. Variability c. Genotype frequency d. Panmixia
5. The limit of correlation coefficient is
a. 0 to 1 b. 0 to -1 c. -1 to +1 d. 1 to ∞
6. Criss-cross pattern of inheritance is seen in
a. Sex – linked traits b. Sex – limited traits c. Sex – influenced traits d. None of the above
7. Which of the following is/are true about heritability
a. It is the regression of breeding value on phenotypic value in narrow sense b. It is the ratio of genotypic variance to phenotypic variance in broad sense c. It is fraction of parent superiority which is transmitted to the offspring d. All the above
8. Phenotype is a good indicator of genotype when the heritability of a trait is
a. High b. Low c. Medium d. Zero
9. Pea comb is common in which class of poultry
a) American b) English c) Asiatic d) Mediterranean
10. The offspring are better than the mean of both parents is called as ________
a. Positive heterosis b. Negative Heterosis c. Hybrid Vigour d. Both a and c
11. Which of the following breeds of class has feathered shanks?
a. American b. English c. Asiatic d. Mediterranean
12. Heritability of production traits is_________________
a. Low b. Medium c. High d. None
13. Pea comb is the typical character of __________breed
a. Leghorn b. Cornish c. Rhode Island Red d. New Hampshire
14. Crossing over takes place in____________ phase of cell cycle
a. Pachytene stage of prophase-I b. Diplotene stage of prophase-I c. Metaphase of meiosis I d. Metaphase of meiosis II
15. Progeny testing and family selection are more effective when the trait is
a. Sex limited traits b. Low heritable traits c. Carcass traits d. All of the above
16. The ratio of response to selection to the selection differential is termed as- .
a. Regression b. Realized heritability c. Heritability in broad sense d. Heritability in narrow sense
17. Heterosis, inbreeding depression and specific combining ability (SCA) are caused by
a. Non-additive gene action (Dominance + Over-dominance + Epistasis) b. Additive gene action c. Both a & b d. None of the above
18. Reciprocal recurrent selection (RRS) is more suitable for poultry and swine selection programme to improve
a. GCA b. SCA c. Both d. None
19. Inbreeding coefficient of progenies produced by grandparent – offspring mating, half sib mating & double first cousin mating are
a. 0.25 b. 0.50 c. 0.125 d. 0.0625
20. Genetic correlation between traits is due to
a. Pleiotropy b. Linkage c. Heterozygosity d. All the above
21. Mean deviation of progeny from its population mean is known as
a. Transmitting ability or Average effect b. Breeding value c. Adaptive value d. None of the above
22. Which of the following is/are disadvantage(s) of inbreeding
a. Frequency of undesirable recessive genes is increased b. It causes inbreeding depression c. Inbred animals are more prone to environmental changes d. All the above
23. Which of the following is/are disadvantage(s) of inbreeding
a. Frequency of undesirable recessive genes is increased b. It causes inbreeding depression c. Inbred animals are more prone to environmental changes d. All the above
24. The ultimate source of all genetic variation of population is due to
a. Chromosome segregation b. Crossing over c. Mutation, Migration, Selection, Genetic drift d. All the above
25. Breeding policy adopted for buffalo improvement in Jammu and Kashmir
a. Grading up b. Selective breeding c. Both a & b d. Crossbreeding
26. Ex-situ conservation means
a. Organized herd outside breeding tract e.g. Research station, Zoo etc. b. Cryopreservation of sperms, oocytes, embryos, somatic cells, stem cells etc. c. Storage of DNA & live tissue d. All the above
27. Progeny testing is used for the selection of
a. Dam b. Sire c. Son d. Daughter
28. Chromosome numbers in water buffalo (Bubalus bubalis) is
a. 60 b. 50 c. 48 d. 54
29. In Hardy Weinberg equilibrium, genotypic frequency of heterozygote will be highest when gene frequency of one gene is
a. 0.60 b. 0.40 c. 0.50 d. 0.9
30. Traits which show discrete variation but which is influenced by many pairs of genes is known as
a. Sex limited traits b. Qualitative traits c. Quantitative traits d. Threshold traits
31. Females get their sex-linked genes from:
a. Father b. Mother c. Equally from both parents d. Neither
32. What is the raw material for herd improvement?
a. Gene frequency b. Variability c. Genotype frequency d. Panmixia
33. Number of linkage groups in a haploid cell having 20 chromosomes is:
a. 10 b. 20 c. 40 d. 5
34. Repeatability is an important parameter needed for the estimation of:
a. Most probable breeding value b. Most probable producing value c. Genetic correlation d. Phenotypic correlation
35. Number of barr-body in turner syndrome
a. 0 b. 1 c. 2 d. 3
36. Egg size & egg weight in poultry are _________ traits
a. Positively correlated b. Negatively correlated c. No correlation d. None
37. The correct order of the stages of the first meiotic prophase is
a. Leptotene, pachytene, zygotene, diplotene b. Leptotene, zygotene, pachytene, diplotene c. Leptotene, diplotene, zygotene, pachytene d. Leptotene, zygotene, diplotene, pachytene
38. Inter-allelic interaction is called
a. Dominance b. Overdominance c. Epistasis d. Recessive
39. Manifold effects of a gene refer to:
a. Penetrance b. Expressivity c. Pleiotropy d. Epistasis
40. Crossing overtakes place between
a. Sister chromatids b. Non-sister chromatids c. Chromosomes d. Chromonema
41. The minimum number of chiasmata in a pair is
a. One b. Two c. Three d. Four
42. Which of the following has maximum chromosome number?
a. Pig b. Horse c. Camel d. Dog
43. The sum total of genes in a population is
a. Genotype b. Phenotype c. Karyotype d. Gene pool
44. Parents having A and AB blood groups will not produce children having –
a. A b. B c. O d. AB
45. If there are 3 alleles for a trait in a population, the total number of genotypes occurring in the population are
a. 3 b. 4 c. 5 d. 6
46. If a genotype is AaBbCcDdFe, then the number of unique gametes possible from the genotype is
a. 4 b. 8 c. 16 d. 3
47. Milk production in cows is an example of:
a. Sex-linked inheritance b. Sex-influenced inheritance c. Sex-limited inheritance d. None of the above
48. Modification of normal gene expression in which a particular gene at one locus masks the expression of at least one other gene at a different chromosomal location is termed as
a. Crossing over b. Epistasis c. Mutation d. None of the above
49. Exchange of genetic material between non-homologous chromosomes is known as
a. Crossing over b. Duplication c. Translocation d. Inverstion
50. Match the following and choose the correct option: List 1 (Alphabetic – Animals): A. Cattle B. Riverine buffalo C. Swamp buffalo D. Sheep List 2 (Roman – Chromosome Numbers): I. 50 II. 60 III. 54 IV. 48
A) A-II, B-I, C-III, D-IV B) A-I, B-II, C-III, D-IV C) A-I, B-II, C-IV, D-III D) A-II, B-I, C-IV, D-III
51. Buffalo species having 48 chromosomes is
a. River buffalo b. Water buffalo c. African buffalo d. Swamp buffalo
52. Proportion of phenotypic variance caused due to additive gene variance is
a. Heritability b. Correlation c. Regression d. Response
53. Correlation among different measurements on a character in the life of an animal is called
a. Repeatability b. Heritability c. Regression d. Variance
54. In h² value of a trait is 0.5; selection differential value is 25; generation interval is 2.5 years, then the response per year will be
a. 0.25 b. 0.50 c. 0.025 d. 0.80
55. In h² value of a trait is 0.5; selection differential value is 25; generation interval is 2.5 years, then the response per year will be
a. 0.25 b. 0.50 c. 0.025 d. 0.80
56. General combining ability calculated in a diallel mating is indicative of
a. Overdominance b. Epistasis c. Non-additive genetic effect d. Additive genetic effect
57. Response to selection depends on
a. Intensity b. Correlation c. Regression d. Inbreeding
58. Inbreeding coefficient of an individual produced from parent offspring is
a. 0.25 b. 0.50 c. 0.025 d. 0.80
59. Malabari breed of goat originates in the state of
a. Orissa b. Jharkhand c. Kerala d. Andhra Pradesh
60. The most important economic trait taken into account while selecting a dairy cow is
a. Age at first estrus b. Lactational yield c. Dry period d. Intercalving period
61. In humans, trisomy of chromosome number 21 is responsible for 2019
a. Haemophilia b. Klinefelter syndrome c. Turner syndrome d. Down syndrome
62. Tissue transferred between genetically different members of the same species is called
(A) Autograft (B) Isograft (C) Allograft (D) Xenograft
63. Match the following (a) Restriction endonucleases (1) Small DNA segments used in DNA fingerprints (b) Ligases (2) Molecular scissors (c) Probe (3) Vector (d) Cosmid (4) Molecular stitchers Choose the correct answer:
(A) a,2; b,4; c:1; d:3 (B) a:1; b:2; c:3; d:4 (C) a:3; b:4; c:1; d:2 (D) a:2; b:1; c:4; d:3
64. The Father of animal breeding is 2019
(A) Gregor John Mendel (B) T.H. Morgon (C) Robert Bakewell (D) Watson Crick
65. Phenotype reflects genotype more precisely when heritability is (2012)
(A) Low (B) High (C) Medium (D) All of the above
66. Consider the following statements 1) For comparing variance, F test is used 2) Additive genetic variance is the result of interaction of genes 3) covariance of the parents is equal to inbreeding coefficient of the progeny 4) Breeding of two different breeds is crossbreeding Which of the following statements is / are correct?
A) 1and3 B) 3and2 C) 3and4 D) 1and4
67. Body coat comprising of large irregular patches of black and white with well defined line of demarcation between two colours is called:
a) Pie bald b) Skew bald c) Whole coloured d) Roan
68. Most efficient method of selection is:
a. Tandem method b. Independent culling method c. Pedigree selection d. Index selection
69. Hissardale is evolved from:
a. Gaddi X Merino b. Nilgiri X Merino c. Bikaneri X Merino d. Nili-Ravi X Merino
70. Sudden heritable change in genetic material is known as
a. Duplication b. Deletion. c. Translocation d. Mutation
71. Diallele crossing is usually practiced in
a. Cattle b. Sheep c. Camel d. Poultry
72. Two genes of two different traits located on the same chromosome are called
a. Alleles b. Linked c. Segregated d. Intermediate
73. Full sib and half sib mating in poultry and parent offspring or uncle- cousin mating in swine is most commonly used in
a. Outcrossing b. Inbreeding c. Pure breeding d. Strain crossing
74. Which of the following is a heritable and fixable component of phenotypic variance?
a. Environmental variation b. Additive variation. c. Both of the above d. None of the above
75. During which phase of mitotic cell division, the nuclear membrane and nucleolus disappear?
a. Prophase b. Metaphase c. Anaphase d. Telophase
76. The coordinating unit of All India Coordinated Research Project (AICRP) on Goat Improvement is presently located at which of the following institutes?
a. NDRI, Karnal, Haryana b. IVRI, Izzatnagar, Uttar Pradesh c. CIRG, Makhdoom, Mathura, (UP) d. CSWRI, Avikanagar, Rajasthan
77. Which of the following traits are controlled by one or few genes/loci and environment has little or no effect on their phenotypic expression?
a. Sex-linked traits b. Qualitative traits c. Quantitative traits d. Sex limited traits
78. Match the pair. A. Monosomic i. 2n-1 B. Triosomic ii. 2n + 1 C. Tetrasomic iii. 2n-2 D. Nullosomic iv. 2n + 2
a) A–III, B–II, C–I, D–II b) A–III, B–II, C–IV, D–I c) A–I, B–II, C–III, D–IV d) A–I, B–II, C–IV, D–III
79. Whenever over 50 percent of gametes produced contain parental combination and less than 50 percent of the gametes contain recombinant combination, then it is the case of Options:
a. Multiple Allele b. Linkage c. Lethal gene d. Epistasis
80. Proof that genetic variance exists at the stage of selection limit:
a. If there is response to reserve selection b. If the population mean remains constant c. Heritability remains constant d. Reduction in phenotypic variance
81. The goal of the selection can be defined under:
a. Artificial selection b. Natural selection c. Both (A) and (B) d. None of the above
82. The mahogany and red colors in cattle represent a good example to illustrate:
a. Sex-influenced inheritance b. Sex-limited inheritance c. Sex-linked inheritance d. None of the above
83. Selection is effective for those traits which are governed by:
a. Additive genes b. Dominant genes c. Epistatic genes d. All of the above
84. Goat meat from which breed is more delicious:
a. Black Bengal and Angora Chevon b. Nubian c. Chegu and Changthangi d. Marwari and Beetal
85. Which is a tetrasomic condition?
a. 2n-1 b. 2n+1+1 c. 2n+2 d. 2n +3
86. Daughter of colour blind father and normal mother marries a normal person. Colour blindness in the family shall be:
a. 50% sons b. 50% daughter c. 50% offspring d. 50% son and 50% daughter
87. Inbreeding coefficient is a measure of increase of:
a. Homozygosity b. Heterozygosity c. Both (A) and (B) d. None of the above
88. Non allelic dominance is known as:
a. Over-dominance b. Co-dominance c. Partial dominance d. Epistasis
89. In a Ram, DNA can be estimated from all of the following except:
a. WBC b. RBC c. Semen d. Root of hair follicles
90. In idealistic population the family selection cannot be better than the individual selection if the:
a. Heritability is low b. Selection intensity is high c. Heritability of family is larger than the individual basis d. None of the above
91. Konkan Kapila cattle breed is native of _________________
a. Maharashtra and Goa b. Karnataka and Andhra Pradesh c. Kerala and Karnataka d. Maharashtra and Karnataka
92. Cross of Tharparkar and Holstein Friesian
a. Karan Swiss b. Karan Fries c. Avikalin d. Avivastra
93. The copper-coloured skin is found in which breed of buffalo?
a. Murrah b. Surti c. Bhadawari d. Toda
94. Lola is the synonym of _________breed .
a. (a) Tharparkar b. (b) HF c. (c) Sahiwal d. (d) Murrah
95. The outcrossing within a herd by use of selected sire is called :
a. Upgrading b. Line breeding c. Selective breeding d. Back crossing
96. If crossing over takes place in linked genes, the proportion of new/recombinant offsprings population is
a. More than 50 percent b. Less than 50 percent c. Less than 25 percent d. None of the above
97. The number of registered native dog breeds in india is:
a. 10 b. 21 c. 15 d. 3
98. Viable material of endangered species can be preserved by
a. Gene bank b. Gene library c. Gene pool d. Herbarium
99. The major cause of genetic correlation is
a. Pleiotropy b. Segregation c. Heterozygosity d. Homozygosity
100. Heritability estimate of a trait is higher when there is
a. Uniform environment b. Genetically uniform population c. Small population d. Dominance effect
101. True swamp buffaloes are found where?
a. Haryana b. West Bengal c. Assam d. Goa
102. Which of the following is not an assumption for Hardy Weinberg equilibrium:
a. Large population b. Migration c. Mutation d. Variation
103. Hinny is a cross of
a. Jennet× Stallion b. Jack x Mare c. Mithun x Cow d. Jennet x Zebra
104. Mean deviation of progeny from the parental population is known as:
a. Selection differential b. Response to selection c. Selection intensity d. Realized heritability
105. Observed superiority of out breeds and cross breeds over the parental breeds is:
a. Heterosis b. Transgressive variation c. Fitness value d. Breedable value
106. The gene which kills an individual before birth is called as:
a. Semi lethal b. Sub vital c. Lethal d. Sub lethal
107. If you were to arrange the chromosome numbers of a cat, a pig, and a rabbit in ascending order, which sequence would be correct?
a. Rabbit, Pig, Cat b. Pig, Cat, Rabbit c. Cat, Rabbit, Pig d. Cat, Pig, Rabbit
108. Which of the following statements about alleles is correct?
a. Alleles are always identical on homologous chromosomes. b. Alleles are different forms of a gene located at the same locus. c. Alleles are only present in haploid organisms. d. Alleles cannot be dominant or recessive.
109. In the case of codominance, what is observed in the phenotype?
a. A blend of both alleles. b. Only the dominant allele is expressed. c. Both alleles are equally and fully expressed. d. Neither allele is expressed.
110. What is the phenotypic ratio for a dihybrid cross involving complementary gene action?
a. 9:3:3:1 b. 9:7 c. 3:1 d. 1:2:1
111. Which of the following is a characteristic of polygenic inheritance?
a. Traits are controlled by a single gene. b. Traits are influenced by multiple genes. c. Traits follow a simple dominant-recessive pattern. d. Traits are not influenced by environmental factors
112. What is the expected phenotypic ratio in the F2 generation for a trait exhibiting incomplete dominance?
a. 3:1 b. 1:2:1 c. 9:3:3:1 d. 2:1
113. Which of the following best describes sex-influenced traits?
a. Traits expressed only in one sex. b. Traits that are expressed differently in males and females. c. Traits linked to the X chromosome. d. Traits linked to the Y chromosome.
114. Match the following genetic concepts with their descriptions: Column A: 1. Incomplete Dominance 2. Codominance 3. Epistasis 4. Polygenic Inheritance Column B: A) A single gene affects multiple traits. B) Multiple genes influence a single trait. C) Both alleles are equally expressed. D) One allele is not completely dominant over the other.
a. 1-D, 2-C, 3-A, 4-B b. 1-C, 2-D, 3-B, 4-A c. 1-B, 2-A, 3-D, 4-C d. 1-A, 2-B, 3-C, 4-D
115. Match the following inheritance patterns with their examples: Column A: 1. X-linked Recessive 2. Multiple Alleles 3. Incomplete Dominance 4. Pleiotropy Column B: A) ABO Blood Group B) Sickle Cell Anemia C) Red-Green Color Blindness D) Snapdragon Flower Color
a. 1-C, 2-A, 3-D, 4-B b. 1-A, 2-B, 3-C, 4-D c. 1-D, 2-C, 3-B, 4-A d. 1-B, 2-D, 3-A, 4-C
116. Duplicate dominant epistasis in F2 generation yields a phenotypic ratio of
a. 12:3 b. 13:3 c. 15:1 d. 9:7
117. In birds the chromosome configuration in female is:
a. A+Z b. A+W c. A+ZW d. A+ZZ
118. Modified dihybrid ratio in dominant epistasis is
a. 9:6:1 b. 9:7 c. 12:3:1 d. 15:1
119. In the Jammu and Kashmir breeding policy, which equine breed is mentioned for upgrading the local horses?
a. Thoroughbred b. Arabian c. Kathiawari d. Zanskari
120. Which of the following statements is true about the sheep breeding policy of Jammu and Kashmir?
a. The inheritance of exotic sheep breeds is fixed upto 50% in crossbreds b. Conservation of Karnah breed is carried out in the Jammu region c. Merino breed is used for crossbreeding in the Kashmir region d. Propagation of fine wool breeds is being encouraged
121. Which of the following is not true regarding the conservation efforts of the double humped camel in Ladakh?
a. The conservation is of an in situ type b. The camel owners are not required to register their animals with the state c. Camels are in a structured breeding programme d. None of the above