Genetics & Evolution UPSC Questions

Biology

Genetics & Evolution MCQ Questions


13.
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
14.
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
15.
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
16.
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
17.
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
18.
What kind of reproduction is known to bring variation in progeny?
A.
Asexual reproduction
B.
Sexual reproduction
C.
Binary fission
D.
Vegetative propagation
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ANSWER :
B. Sexual reproduction