Part of soil which is in contact with root surface is called___________________?

A. Ratio of phenotypes is 3:1
B. Ratio of genotypes is 3:1
C. Phenotypic ratio corresponds to the genotypic ratio
D. None of the above

A. W. Batson and B.C Pun net
B. T.B. Morgan and G. Mendel
C. W.S. Sutton and K. R. Porter
D. C.B. Bridges and G.H. Shull

A. Van Mohl
B. Miescher
C. Benda
D. Schultz