Mendel's work remain unrecognized for long time due to

$I.$ Communication was not easy

$II.$ Concept of factors which did not blend was not accepted

$III.$ Use of mathematics to explain biological problem was unacceptable

$IV.$ He could not provide any physical proof for the existence of factors Choose the right combination

………….. noted that behavior of chromosomes was parallel to the behavior of genes and used chromosome movement to explain Mendel's laws.

Fruit flies are one of the best materials for genetic studies because of all, except

Mendel's law of heredity can be explained with the help of

Mendel's results on the inheritance of characters were rediscovered by