Plant Breeding Questions Answers

Quiz 2

11) In Mendel’s trihybrid experiment, F2 Phenotypic ratio was­
(A) 9:3:3:1
(B) 27:9:9:9:3:3:3:1
(C) 27:27:27:9:9:9
(D) 9:9:9:3:3:1
Correct Answer :­ 27:9:9:9:3:3:3:1 

12) A type of dominance relation in which the phenotype of heterozygote is more extreme than that of either homozygous parent, is known as­
(A) Incomplete dominance
(B) Over dominance
(C) Co­dominance 
(D) None of above
Correct Answer :­ Over dominance

13) Which one is a test cross­
(A) TT x Tt
(B) Tt x Tt
(C) TT x TT
(D) Tt x tt
Correct Answer :­Tt x tt 

14) The term ‘Crossing Over’ was first introduced by­
(A) Bateson & Punnet
(B) Morgan & Castle (1912)
(C) Janssen (1909)
(D) Sutton & Boveri
Correct Answer :­ Morgan & Castle (1912) 

15) According to C.B. Bridges (1925), if the sex index value (X/A) in drosophila is 0.5 or less then the offspring will be.
(A) Male
(B) Female
(C) Both male and female
(D) None of these
Correct Answer :­ Male 

16) Genes that are carried on the same chromosome are called­
(A) Linked Genes
(B) Unlinked Genes
(C) Dominant genes
(D) Recessive Genes
Correct Answer :­ Linked Genes 

17) When the duplicated gene sequence is attached to another position owning to inter chromosomal duplication then it is known as­
(A) Inversion
(B) Transposed Duplication
(C) Direct Tandem Duplication
(D) None of the above
Correct Answer :­ Transposed Duplication 

18) Mutation which occurs during DNA replication is called­
(A) Frame Shift Mutation
(B) Copy Error Mutation
(C) Spontaneous Mutation
(D) None of the above
Correct Answer :­ Copy Error Mutation  

19) The Genome D present in bread wheat is supposed to have been derived from­
(A) Aegilops Squarrosa
(B) Aegilops Speltoides
(C) Triticum Monococcum
(D) None of the above
Correct Answer :­ Aegilops Squarrosa  

20) Split genes are found in­
(A) Eukaryotes
(B) Prokaryotes
(C) Eukaryotes and Prokaryotes Both 
(D) None of the above

Correct Answer :­ Eukaryotes
Quiz: 1   2   3   4   5   6   7   8   9   10
Plant Pathologists are scientists concerned with the understanding of the
Plant Breeding Questions Answers

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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