Escherichia coli is an important material for genetic experiments because
Assertion : The uptake of $DNA$ during transformation is an active, energy requiring process.
Reason : Transformation occurs in only those bacteria, which possess the enzymatic machinery involved in the active uptake and recombination
In Pisum sativum there are $14$ chromosomes. How may pairs with different chromosomal composition can be prepared
During $DNA$ replication, the strands separate by