A) 2 pair of autosomes and one pair of sex chromosome
B) 3 pair of autosomes and one pair of sex chromosomes
C) 1 pair of autosomes and 3 pair of sex chromosomes
D) 2 pair of autosomes and 2 pair of sex chromosomes
Correct Answer: A
Solution :
Drosophila contains 2 sets of autosomes and one pair of sex chromosome. But Bridges (1922) a scientist came accross certain Drosophila which were triploid and thus had 3 sets of chromosomes.
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