Tamil Nadu (English Medium) Plus 2 Biology Science Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
'Chromosome theory of inheritance' was given by

(A) De Vries	(B) Mendel
(C) Morgan	(D) Sutton and Boveri

Question-2
Some characters did not assort independently due to

(A) amitosis	(B) linkage
(C) crossing-over	(D) meiosis

Question-3
Three crops that contribute maximum to the global food grain production are

(A) wheat, rice and maize	(B) wheat,rice and barley
(C) rice, maize and sorghum	(D) wheat, maize and sorghum

Question-4
The restriction endonuclease is used for cutting

(A) m-RNA	(B) RNA fragment
(C) single-strand DNA	(D) double-stranded DNA

Question-5
The similarity between DNA and RNA is that both of them have

(A) same sugars	(B) same purines
(C) same pyramidines	(D) same phosphate group

Question-6
DNA multiplication is called

(A) translation	(B) transduction
(C) transcription	(D) replication

Question-7
Which of the following is used mostly in genetic engineering?

(A) Bacillus	(B) Clostridium
(C) Pseudomonas	(D) Agrobacterium

Question-8
What will be the no. of linkage groups in maize, if it has 10 pairs of chromosome?

(A) 5	(B) 10
(C) 20	(D) none of these

Question-9
The preparation of recombinant DNA requires

(A) nitro-reductase	(B) DNA polymerase
(C) RNA polymerase	(D) restriction enzymes

Question-10
Which of the following is used in genetic engineering?

(A) nuclease	(B) RNA polymerase
(C) DNA polymerase	(D) restriction endonuclease

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Plus 2 Biology Science

Tamil Nadu (English Medium)

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