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Plant Breeding & Genetics-5

Q.1
Crossing over to describe physical exchange of chromosomal segment proposed by_________.

Morgen and Cuttle
Sturtevant
Hugo De Vries


Q.2
Genome mapping is also known as__________.
Identification of DNA coding sequence
Chromosome mapping
Identification of DNA non-coding sequence


Q.3
Genetic map is prepared to know________.
Distance between two gene
Location of gene
Recombinant frequency


Q.4
When phenotypic effect is known but the gene product is not known or not identified, this phenomena is____________.
Reverse genetics
Forward genetics
Both


Q.5
Once molecular markers (RFLPS, RAPDS, Microsatellites) tightly linked to gene of interest are identified, the next step in map based cloning is_______.
Genetic mapping
Physical mapping
Both


Q.6
Agrobacterium mediated transformation has been reported in_______.
Rice
Maize
Wheat

Q.7
Which of following interacts with several proteins to form the ribonuclease containing multiprotein complex that binds and degrades the sense m RNA?

Sense RNA
r-RNA
Anti – sense RNA


Q.8
Which of following restriction endonucleases that cut DNA sequences infrequently__________.
Type- I
Type- II
Type- III


Q.9
A replicon that stably inherited in extra chromosomal state________.
Bacteria
Virus
Plasmid


Q.10
A default splicing pattern in which the 3 introns separating the 4 ORFs are spliced out generating on m RNA that encodes 87 KDa transposase.
Germ splicing
Somatic splicing
Both


Q.11
A short DNA sequences of about 800-1400 bp and have the ability to transpose_______.
Composite transpose
Insertion sequence
Direct terminal repeats


Q.12
2-Deoxyribose is found in_______.
RNA
Protein
DNA


Q.13
The production of greater number of copies of a genome_______.
Replication
Duplication
Amplification


Q.14
Gene of an organism encodes specific proteins, which ultimately produce specific phenotype.
Structural gene
Regulator gene
Operator


Q.15
A small molecules and highly specific in their action.
Repressors
Effectors
Non-inducer


Q.16
Which of following is located at beginning of the lac operon?
Repressor
Operator
Attenuator


Q.17
E. coli is_______.
Circular
Rectangular
Gram negative


Q.18
Plasmid is double stranded circular________.
Single stranded RNA molecules
DNA molecules
RNA molecules


Q.19
Ribosome act as a factory for protein synthesis__________.
m-RNA
r- RNA
t- RNA


Q.20
Induces crown gall disease.
A. rhizoques
A. radiobacter
A. tumifacience


Q.21
Initiation codon is________.
UGA
CUG
AUG


Q.22
Operon are common in the organization of genes in______.
Fungus
Bacteria
Viruses


Q.23
The part of protein coding gene that is translated in to a protein is called________.
Intron
Exon
ORF


Q.24
Ligase_______.
Joins DNA fragment
Cleaves DNA fragment
Cuts DNA fragment


Q.25
Site useful for insertion of foreign DNA________.
Initiation of replication site of DNA
Termination site of DNA
Cleavage site

Number of score out of 25 = Score in percentage =


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