656: 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 disease-resistant animal breeds,
Which of the statements given above is/are correct?
(a) 1 and 2 only
(b) 2 Only
(c) 1 and 3 only
(d) 1, 2 and 3
657: The primitive tribes of Andaman are descendants of:
(a) Negroids
(b) Australoids
(c) Mongoloids
(d) Caucasoids
658: Consider the following statements :
1. Natural gas occurs in the Gondwana beds.
2. Mica occurs in abundance in Kodarma.
3. Dharwars are famous for petroleum.
Which of the statements given above is / are correct?
(a) 1 and 2
(b) 2 and 3
(c) 2 only
(d) None
659: Consider the following statements
1. Most of the world's coral reefs are in tropical waters.
2. More than one-third of the world's coral reefs are located in the territories of
Australia, Indonesia and Philippines.
3. Coral reefs host far more number of animal phyla than those hosted by tropical rainforests.
Which of the statements given above is/are correct ?
(a) 1 and 2 only
(b) 3 only
(c) 1and 3 only
(d) 1, 2 and 3
660: Match List-I with List-II and select the correct answer using the code given below the lists :
List-I (Leading Woman Lawn Tennis Player)
A. Daniela Hantuchova
B. Patty Schnyder
C. Nadia Petrova
D. Amelie Mauresmo
List-II (Country)
1. Russia
2. Slovakia
3. France
4. Switzerland
(A) 2 4 1 3
(B) 3 1 4 2
(C) 2 1 4 3
(D) 3 4 1 2