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

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

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

Mention the advantages of selecting pea plant for experiment by Mendel.

Chromosomal theory of inheritance was proposed by