The exchange of one part of a chromosome to the other part of same or another chromosome is called

For the strand separation and stabilisation during $DNA$ replication which of the following set of enzymes and proteins are required?

Satellite $DNA$ is present in

In which step of $DNA$ profiling, nitrocellulose membrane is used?

Which of the following process is related to reverse transcription?

A pure breeding pea plant with the dominant phenotype of character $A$ and recessive phenotype of character $B$ was crossed with another pure breeding plant with the recessive phenotype of $A$ and dominant phenotype of character $B. A$ offspring of this cross was crossed with a homozygous recessive for both the characters -$A$ and $B$. The following results are obtained $22$ were phenotypically dominant for $A$ and recessive for $B$.

$4$ were phenotypically dominant for both $A$ and $B$.

$4$ were phenotypically recessive for both $A$ and $B$.

$24$ were phenotypically recessive for $A$ and dominant for $B$.

These results show that