A) old world tetraploid
B) new world tetraploid
C) old world diploid
D) new world diploid
Correct Answer: B
Solution :
Gossypium hirsutum is a new world tetraploid species, which contains haploid chromosomes (n= 26). New world species are Gossypium hirsutum, Gossypium thurberi, Gossypium barbadense.
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