Animal Genetics and Breeding Quiz 27 Quiz InstructionsThis quiz consists of 20 multiple-choice questions.You will be awarded 5 marks for each correct answer. Question 1: Genetic drift is applicable forSmall populationLarge populationBothNone Question 2: Non additive gene involvesDominanceEpistatsisInteractionAll of the above Question 3: Which buffalo is used for upgradation in Jammu regionNili raviMehsanaMurrahBhadawari Question 4: Comb type is an example ofQuantitativeQualitativePureCommerical gene action Question 5: Selection utilizes which type of gene actionAdditive gene actionNon additive gene actionBothNone of the above Question 6: The exotic breed used for cross breeding in sheep for fine wool isBikaneriSouth downCorridaleRambouillet Question 7: Chromosomes number in camel is72747664 Question 8: If the coefficient of selection is 0.25 , the. fitness is0.250.50.751 Question 9: The proportion of Sex linked genes in a population isHigher in heterogametic sexHigher in homogametic sexEqual in both sexesNone of the above Question 10: Epistatic ratio of 9:7 is observed inRecessive epistasisDuplicate Recessive epistasisDominant epistasisNone of the above Question 11: If a population has the following genotype frequencies, AA = 0.42, Aa= 0.46, and = 0.12.what are the allele frequencies?A = 0.42, a = 0.12A = 0.60, a = 0.40A = 0.65, a = 0.35A = 0.76, a = 0.24 Question 12: The greatest source of genetic variation in Animal population is fromMutationsSexual reproductionSelectionGeographic variation Question 13: During the first meiotic division (meiosis I)Homologous chromosomes separateChromosome number is reduced in halfCrossing over between nonsister chromatids occursAll of the above Question 14: An individual with the genotype of AABbCcDD can make how many different kinds of gametes24816 Question 15: In a cross that follows a single trait, if a homozygous dominant is crossed with a heterozygote for a given trait, the offspring will be:All of the dominant phenotype¼ of the recessive phenotypeAll homozygous dominantAll homozygous recessive Question 16: Recessive epistasis ratio12:03:0113:39:03:0415:1 Question 17: Estimates of the number of genes in mammalian genome areBetween 3000 to 6000Between 30000 to 60000Between 300000 to 600000None of these Question 18: EBV isUsed for culling and mating decision & to measure genetic changeObtained from statistical linear modelsTwo times the ETAAll of the above Question 19: Suppose you have a herd of cows that were all cloned from a single individual. That is, the entire herd is genetically identical, i.e. 100% of genes are identical by descent in all animals.All animals would have exactly the same phenotype (e.g. same amount of milk yeild)All animals would have exactly the same EBVAnimals would have different EBV because the phenotypes are all differentAll animals would look exactly the same Question 20: Most common Robert sonaian translocation in cattle involves which chromosome number shift1 to 261 to 271 to 281 to 29
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