The characteristics of 'The chromosome theory of linkage', formulated by Morgan and Castle, include:

A. Genes that show linkage are situated in different chromosomes

B. Genes are arranged in a linear fashion in the chromosome i.e., linkage of genes islinear

C. The distance between the linked genes is directly proportional to the strength of linkage

D. Linked genes remain in a new combination during course of inheritance

Answer: Option B