Genetics & Evolution UPSC Questions

Biology

Genetics & Evolution MCQ Questions


13.
Which of the following pairs were awarded the Nobel Prize in 1962 for DNA structure discovery?
A.
Watson and Kornberg
B.
Crick and Monod
C.
Watson and Crick
D.
Benzer and Brenner
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ANSWER :
C. Watson and Crick
14.
The double-helical structure of DNA was proposed in which year?
A.
1944
B.
1953
C.
1962
D.
1970
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ANSWER :
B. 1953
15.
What was the title of Francis Crick’s Ph.D. thesis?
A.
Genetic Code and Proteins
B.
Structure of DNA
C.
X-ray Diffraction: Polypeptides and Proteins
D.
Molecular Basis of Inheritance
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ANSWER :
C. X-ray Diffraction: Polypeptides and Proteins
16.
What does 'variation' in genetics refer to?
A.
Similar traits in siblings
B.
Differences among progeny and their parents
C.
Cloning of organisms
D.
Lack of reproduction
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ANSWER :
B. Differences among progeny and their parents
17.
What allowed Mendel to generalize his laws of inheritance?
A.
Use of chemical tests
B.
Small sample size
C.
Confirmation over successive generations
D.
Use of genetic engineering
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ANSWER :
C. Confirmation over successive generations
18.
How many contrasting traits in pea plants did Mendel study?
A.
5
B.
6
C.
7
D.
8
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ANSWER :
C. 7