Think about the genotype of organism

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Reference no: EM132547755

Suppose you streaked out a bacterial strain with the pBluescript plasmid with an insert on LB agar, LB + Amp agar and LB + XGal agar (no Amp).

You found that the strain grew white colonies on all the plates.

You take a colony from the LB plate and restreak onto these three media.

This time you get white colonies on the LB only but it did not grow on the LB + Amp but there were blue colonies on the LB + XGal plates.

Offer the best explanation of how this can occur.

Spontaneous mutation will not give full credit here.

Hint: think about the genotype of this organism.

Reference no: EM132547755

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