Genetics and Evolution-Molecular Basis of Inheritance [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Biology]: Questions 12 - 17 of 125
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Question 12
Question MCQ▾
Semiconservative model of DNA replication was proposed by which workers in eukayotes?
Choices
Choice (4) | Response | |
---|---|---|
a. | Taylor, Woods and Huges | |
b. | Watson and Crick | |
c. | Nirenberg and Khorana | |
d. | Messelson and Stahl |
Question 13
Question MCQ▾
Which one of the following ratio is constant in DNAs of different species?
Choices
Choice (4) | Response | |
---|---|---|
a. | A + G/T + C | |
b. | A + U/C + G | |
c. | A + C/U + G | |
d. | A + T/C + G |
Question 14
Question MCQ▾
Feulgen reaction is a special test for
Choices
Choice (4) | Response | |
---|---|---|
a. | RNA | |
b. | DNA | |
c. | Carbohydrate | |
d. | Protein |
Question 15
Question MCQ▾
The most striking example of point mutation is found in a disease called
Choices
Choice (4) | Response | |
---|---|---|
a. | Thalassemia | |
b. | Sickle-cell anaemia | |
c. | Night blindness | |
d. | Down՚s syndrome |
Question 16
Question MCQ▾
Which one of the following pair is correctly matched?
Choices
Choice (4) | Response | |
---|---|---|
a. | George Beadle – Proposed the concept of inborn errors | |
b. | Francis Crick – Proposed one gene one polypeptide hypothesis | |
c. | Linus Pauling – Isolated the DNA for the first time. | |
d. | Frederick Griffith – Discovered the phenomenon of transformation |
Question 17
Question MCQ▾
At which site of a t-RNA molecular hydrogen bonds to a m-RNA molecule?
Choices
Choice (4) | Response | |
---|---|---|
a. | Codon | |
b. | 3′ end of the t-RNA molecule | |
c. | Anticodon | |
d. | 5′ end of the t-RNA molecule |