Statement A: | Similarities in proteins and genes among diverse organisms indicates common ancestry. |
Statement B: | Humans and chimpanzees also show biochemical similarities. |
I: | the first form of life could have come from pre-existing non-living organic molecules (e.g. RNA, protein, etc.) |
II: | formation of life was preceded by chemical evolution, i.e., the formation of diverse organic molecules from inorganic constituents. |
III: | The conditions on earth were – high temperature, volcanic storms, reducing atmosphere containing CH4, NH3, etc. |
1. | Only I and II are correct. |
2. | Only I and III are correct. |
3. | Only II and III are correct. |
4. | I, II and III are correct. |