MCQ
During DNA replication, the strands separate by:
- ADNA polymerase.
- BTopoisomerase.
- CUnwindase/ helicase.
- DGyrase.
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| Column $- I$ | Column $- II$ |
| $(p)$ Intine | $(v)$ Long structure |
| $(q)$ Exine | $(w)$ Nutrition to pollengrain |
| $(r)$ Pollentube | $(x)$ Sporopollenin |
| $(s)$ Tapetum | $(y)$ Pectin, cellulose |
| $(z)$ Glycogen |
Reason : Proteins which can be synthesized only by genetic engineering are effective against viruses.