286: The theory of "Jumping Genes" was propounded by
(a) Gregor Johann Mendel
(b) Thomas Hunt Morgan
(c) Barbara McClintock
(d) Watson and Crick
287: Who was the Governor-General of India during the Sepoy Mutiny?
(a) Lord Hardinge
(b) Lord Lytton
(c) Lord Canning
(d) Lord Dalhousie
288: In a school, out of 40 staff members, 30 are males. Some of the female teachers can sing while no male can sing. The principal invited six persons to a party by drawing lots. It was found that no member in the party could sing. Which of the following conclusions can be definitely drawn?
(a) Only males were invited to the party
(b) Some of the invitees were males and some were females who could not sing
(c) Only females, who could not sing, were invited to the party
(d) None of the above
289: Which of the following stream systems dissects Aravalli range?
(a) Narmada, Son
(b) Banas, Luni
(c) Betwa, Koina
(d) Ganga, Saraswati
290: Which of the following pairs is/are correctly matched ? Spacecraft Purpose
1. Cassini -Huygens Orbiting the: Venus and transmitting data to the Earth
2. Messenger: Mapping and investigating the Mercury
3. Voyager 1 and 2: Exploring the outer solar system
Select the correct answer using thecode given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3