In the absence of lactose, the repressor protein encoded by the I gene binds to the lac operator and prevents transcription. Binding of allolactose to the repressor causes it to leave the operator. This enables RNA polymerase to transcribe the three genes of the operon.
A tough-skinned tropical fruit, the mango features a sweet, orange- to red-color flesh inside when ripe. Kensington pride, Kent, Palmer and sensation are only a few of the many varieties of mango available through groceries and markets.
mango - large oval tropical fruit having smooth skin, juicy aromatic pulp, and a large hairy seed. edible fruit - edible reproductive body of a seed plant especially one having sweet flesh. Mangifera indica, mango, mango tree - large evergreen tropical tree cultivated for its large oval fruit. Translations.