GCE Agricultural Science 1990 Question 31

Study the diagram (a cross between homozygous tall pea and homozygous dwarf pea, rows labelled I, II and III). If the individual crops obtained in III are crossed, the phenotypic ratio of tall to dwarf progenies would be

1. A.3 : 1
2. B.1 : 2 :1
3. C.2 : 1
4. D.1 : 2
5. E.4 : 0