Continuous variations are attributed to
Chromosomal aberrations
Polyploidy
Mutations
Crossing over
When closely placed genes on the same chromosome are inherited together the phenomenon is known as
The hybrid produced by cytoplasmic fusion is called
The most likely reason for the development of resistance against pesticides in insects damaging a crop is
Sex linked inheritance was discovered by
Mendelism was rediscovered by
$I.$ Morgan
$II.$ De Vries
$III.$ Correns
$IV.$ Tschermark
Choose the correct option