Plant Breeding And Genetics mcq pdf

Quiz 4

31)If at the end of meiosis, the four daughter cells have four chromosomes, how many chromosomes were in mother cell?
(A) 8
(B) 16
(C) 4
(D) 2
Correct Answer :­2 

32) Human blood groups (A, B, AB, & O) are example of­
(A) Gradient of diploidy
(B) Cline
(C) Transposon
(D) Multiple allelism
Correct Answer :­Multiple allelism  

33)A potential danger to a population that has been greatly reduced in number is the
(A) Hardy Weinberg disequilibrium
(B) Loss of Genetic Variability
(C) Reduced Gene Flow
(D) All of above
Correct Answer :­Loss of Genetic Variability 

34) Variation arises by­
(A) Gene Mutation
(B) Recombination
(C) Chromosomal Mutation
(D) All of above
Correct Answer :­ All of above 

35)The ability of an organism to survive and reproduce in its environment, is termed as­
(A) Evolution
(B) Adaptation
(C) Fitness
(D) All of above
Correct Answer :­Fitness 

36) Prolonged inbreeding can lead to­
(A) Increased Fertility
(B) Reduced Fertility
(C) Natural Selection
(D) All of above
Correct Answer :­Reduced Fertility 

37) An Allopolyploid can reproduce with individuals from­
(A) Neither Paternal nor maternal population
(B) Its Maternal Population
(C) Its Paternal Population
(D) Both Maternal and paternal population
Correct Answer :­Neither Paternal nor maternal population

38) The lac Z gene in lac operon codes for­
(A) Repressor Protein
(B) Galactosidase
(C) Permease
(D) Transacetylase
Correct Answer :­  ­Galactosidase 

39) In trp operon, trp B and trp A genes codes for­
(A) B­Galactosidase
(B) Tryptophan Synthase
(C) Anthranilate Synthase
(D) All of the above
Correct Answer :­Tryptophan Synthase 

40) The DNA repair system found to be most active are­
(B) Photo reactivation
(C) Excision
(D) All of the above

Correct Answer :­All of the above 

Quiz: 1   2   3   4   5   6   7   8   9   10
Plant Pathologists are scientists concerned with the understanding of the
Plant Breeding And Genetics mcq pdf
dynamic processes involved in the plant health. Plant Pathology is defined as the study of the organisms and environmental conditions that cause disease in plants, the mechanisms by which this occurs, the interactions between these causal agents and the plant (effects on plant growth, yield and quality), and the methods of managing or controlling plant disease. Plant breeding has been practiced for thousands of years, since near the beginning of human civilization. It is practiced worldwide by individuals such as gardeners and farmers, or by professional plant breeders employed by organizations such as government institutions, universities, crop-specific industry associations or research centers.
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