A) Triploid
B) Haploid
C) Autotetraploid
D) Allotetraploid
Correct Answer: D
Solution :
Colchicine \[({{C}_{22}}{{H}_{25}}{{O}_{6}}N)\] is used to induce polyploidy. Raphanobrassica (4n = 36) was produced by G.D Karpechenko (1927) bycrossing radish (Jiaphanus sacivus 2n = 18) and cabbage (Brossiea oleracea 2n = 18). It is the first allotetraploid.
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