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CGP EDU Academic Team
Published on: August 21, 2026
In a certain taxon of insects some have 17 chromosomes and the others have 18 chromosomes. The 17 and 18 chromosome-bearing organisms are:
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Verified by ExpertsThe correct answer is:
A
In certain insects, such as cockroach, and some roundworms, the Y -chromosome is missing so that the male has only one sex chromosome, i.e., ' 
'. The condition in the male is XO ( O means absence of one sex chromosome) and in the female it is XX , thus males showing 17 chromosomes while females show 18 chromosome.
All the other option given are wrong.
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