Genetics & Evolution UPSC Questions

Biology

Genetics & Evolution MCQ Questions


1.
Who proposed the double-helical structure of DNA?
A.
James Watson and Francis Crick
B.
Gregor Mendel
C.
Rosalind Franklin
D.
Kornbergs
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ANSWER :
A. James Watson and Francis Crick
2.
What does the term 'inheritance' refer to in genetics?
A.
Random mutations in DNA
B.
Passing of traits from parents to offspring
C.
Evolution of species
D.
Formation of gametes
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ANSWER :
B. Passing of traits from parents to offspring
3.
What is a 'true-breeding' line?
A.
A line showing variation in traits
B.
A hybrid line
C.
A line with unstable traits
D.
A line showing stable trait inheritance over generations
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ANSWER :
D. A line showing stable trait inheritance over generations
4.
Which organism did Mendel use for his hybridization experiments?
A.
Maize
B.
Garden pea
C.
Tomato
D.
Sunflower
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ANSWER :
B. Garden pea
5.
What is the importance of using Pneumococcal Conjugate Vaccines in India?
1.These vaccines are effective against pneumonia as well as meningitis and sepsis.
2.Dependence on antibiotics that are not effective against drug-resistant bacteria can be reduced.
3.These vaccines have no side effects and cause no allergic reactions.
Select the correct answer using the code given below

UPSC - 2020

A.
1 only
B.
1 and 2 only
C.
3 only
D.
1, 2 and 3
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ANSWER :
B. 1 and 2 only
6.
In which years did Mendel conduct his hybridisation experiments?
A.
1846-1853
B.
1856-1863
C.
1866-1873
D.
1876-1883
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ANSWER :
B. 1856-1863