Gentics And Evoloution - Study Mode

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[#231] Consider the following statements regarding the functions of DNA and choose the correct answer: 1. DNA is the genetic material of most organisms 2. It serves for transcription of mRNA 3. It is also capable of reverse transcription 4. It takes part in genetic recombination and has the ability to repair itself

(A) Only 1, 2 and 3 are true

(B) 1, 2, 3 and 4 are true

(C) Only 2, 3 and 4 are true

(D) Only 1 and 4 are true

Correct Answer

(B) 1, 2, 3 and 4 are true

[#232] Consider the following statements. 1. A colourblind person cannot distinguish red and green. 2. Colour blindness is related with a defect in cone cells. Which of the statements given above is/are correct?

(A) Only 1

(B) Only 2

(C) 1 and 2

(D) None of these

Correct Answer

(C) 1 and 2

[#233] The existence of photosynthetic organisms about 400 million years after Fig Tree sediments were deposited has been indicated by the occurrence of

(A) Stromatolites

(B) Photosynthetic bacteria

(C) Pleuro pneumonia like organisms

(D) None of the above

Correct Answer

(A) Stromatolites

[#234] Homo erectus evolved about 1.7 million yeas ago. They used fire and tools and also used animal hides as clothing. The fossil of homo erectus were named as

(A) Neanderthal man

(B) Cro-magnon man

(C) Java ape man

(D) Proconsul

Correct Answer

(C) Java ape man

[#235] Who propounded the theory of evolution?

(A) Spencer

(B) Darwin

(C) Wallace

(D) Huxley

Correct Answer

(B) Darwin