In grasshoppers and moths, there are two pairs of autosomes and

X only

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X and Y

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Y only

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None of the above

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Solution

The correct option is A X only
Grasshoppers and moths show XX-XO type of sex determination, where male carries only one copy of X chromosome (XO) and females have two copies of it (XX). Hence, grasshoppers and moths have two pairs of autosomes and X chromosome only. "Y-chromosome" is absent.

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The males of grasshoppers and bugs possess two sets of autosomes and:

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