The grouping of human chromosomes is based on

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

A model that relates repetitive $DNA$ sequences and their transcripts of regulation in eukaryotes was proposed by

Assertion: Polytene chromosomes have a high amount of $DNA$.

Reason: Polytene chromosomes are formed by repeated replication.

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

Find out the incorrect match.