Given below in Column I are the criteria for a molecule that can act as a genetic material and the corresponding inferences drawn are given in Column II. Identify the criteria that is not correctly matched to the inference drawn:
|
Criteria |
Inference drawn |
1. |
It should be able to replicate |
Protein cannot be the genetic material |
2. |
It should be stable structurally and chemically |
DNA is a better genetic material than RNA |
3. |
It should provide the scope for slow changes |
RNA evolves faster than DNA |
4. |
It should be able to express in the form of Mendelian characters |
The protein synthesizing machinery has evolved around DNA |
Consider the given two statements:
I: | Among the two nucleic acids DNA is a better genetic material. |
II: | The protein synthesizing machinery has evolved around RNA and not DNA. |
1. | Both I and II are correct and II explains I |
2. | Both I and II are correct but II does not explain I |
3. | I is correct but II is incorrect |
4. | Both I and II are incorrect |
The genetic material for the first life on the earth was probably:
1. | ds DNA | 2. | ss DNA |
3. | Protein | 4. | RNA |
Identify the incorrect match between the scientists in Column I with their contributions in Column II:
|
COLUMN I |
COLUMN II |
1. |
Frederick Griffith |
Discovery of bacterial transformation |
2. |
Meselson and Stahl |
Proposed semi-conservative mode of DNA replication based on complementary base pairing and antiparallel strands |
3. |
Avery, Macleod, and McCarty |
Purified the transforming principle and found it to be DNA |
4. |
Erwin Chargaff |
In natural DNA the number of guanine units equals the number of cytosine units and the number of adenine units equals the number of thymine units |