Correct option is B
Ans.(b)
The chromosomal theory of inheritance was proposed by Sutton and Boveri in 1903. Sutton and Boveri argued that the pairing and separation of a pair of chromosomes would lead to the segregation of a pair of factors they carried. Sutton united the knowledge of chromosomal segregation with Mendelian principles and called it the chromosomal theory of inheritance.
Generation.