genetic engineering and bio technology - Category wise Question and Answer Practice Test with Solutions

Question : 26 [IAS (Pre) 2011]

At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us?

1. It is possible to know the pedigree of livestock.
2. It is possible to understand the causes of all human diseases.
3. It is possible to develop diseaseresistant animal breeds.

a) 1 and 3

b) 1 and 2

c) Only 2

d) 1, 2 and 3

Question : 27 [UPRO/ARO (Pre) 2014]

Generally, Orobanche weed is found in

a) Rice field

b) Tobacco field

c) Gram field

d) Wheat field

Question : 28 [IAS]

Assertion (A) :
In human beings, the female play a major role in determining the sex of the offspring.
Reason (R) :
Women have two X-chromosomes.

a) A is true, but R is false

b) Both A and R are true and R is the correct explanation of A

c) Both A and R are true, but R is not a correct explanation of A

d) A is false, but R is true

Question : 29 [UPPCS (Mains) 2012]

James D. Watson and Francis Crick are associated with the discovery of

a) Anti-malarial drugs

b) Vaccine

c) Structure of DNA

d) Penicillin

Question : 30

Which of the following is known as specific molecular scissors?

a) Restriction endonuclease

b) Ligase

c) Helicase

d) DNA polymerase