Polytene chromosomes in salivary glands of are formed as a result of
Endoduplication
Duplication without separation
Replication of $DNA$ without cell division
All of the above
Which of the following phenomena leads to variation in $DNA$?
In $F_{2}$-generation, quantitative inheritance $1: 4: 6: 4: 1$ is obtained instead of
A diseased man marries a normal woman and they get three daughters and five sons. All the daughters were diseased and sons were normal. The gene of this disease is
Somaclonal variation appears in
When heterozygous tall plants are self-pollinated than tall and dwarf plants are obtained, this is explain to