81. The process in which two or more adjoining somatic protoplasts fused without any inducer is called as _______ fusion.
A. spontaneous.
B. induced.
C. protoplast.
D. somatic cell.
ANSWER: A
82. Two or more adjoining somatic protoplasts fusing with any chemical is called as _______ fusion
A. spontaneous.
B. induced.
C. protoplast.
D. somatic cell.
ANSWER: B
83. ______ fusion is a physical phenomenon.
A. Spontaneous.
B. Induced.
C. Protoplast.
D. somatic cell.
ANSWER: C
84. Phenotypic changes are associated with ______ changes of an organism.
A. genetic.
B. physical.
C. chemical.
D. biological.
ANSWER: A
85. Plants derived form tissue culture has been referred as _______.
A. somaclones.
B. calliclones.
C. protoclones.
D. all the above.
ANSWER: D
86. _______ is the genetic variability regenerated during tissue culture.
A. Somoclonal variation.
B. Organogenesis.
C. Micropropagation.
D. Androgenesis.
ANSWER: A
87. Who analysed somaclonal variation in a large number of plants?
A. Larkin & Sharp.
B. Evans & Sharp.
C. Hein & Mee.
D. Stepar & Bidney.
ANSWER: B
88. Which one of the following serves as a marker for mapping a specified gene in RFLP?
A. DNA.
B. rRNA.
C. tRNA.
D. mRNA.
ANSWER: A
89. A gene may have many alleles, but each individual has only two alleles because _______.
A. having more than two alleles is lethal.
B. having more than two alleles unbalances the chromosomes.
C. a person has two parents, each will contribute one allele.
D. a backup set of alleles is necessary in case something.
ANSWER: C
90. A transgenic organism has _______.
A. genes that other organisms do not.
B. genes from different species.
C. a dominant phenotype.
D. had its genome sequenced.
ANSWER: B
