MCQ
'Operon model' for gene regulation in bacteria was proposed by
- ✓Jacob and Monad
- BBarry Commoner
- CCrick
- DWatson and Crick
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$I.$ It represents typical agarose gel electrophoresis which showing differential migration of $DNA$ fragments
$II.$ Lane $1$ contains undigested $DNA$ fragments
$III.$ Lanes $2$ to $4$ contains digested $DNA$ fragment
$IV.$ Smallest $DNA$ bands are present at ( $A$ ) position and largest $DNA$ bands are present at ( $B$ ) position
If mortality is represented by $-D$
If immigration is represented by $-I$
If emigration is represented by $-E$
If population density is represented by $-N$
Then population density at time $t+1$ is represented by