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.
Easy steps to ripen and store your mangos. Keep unripe mangos at room temperature. Mangos shouldnât be refrigerated before they are ripe. Mangos will continue to ripen at room temperature, becoming sweeter and softer over several days.To speed up ripening, place mangos in a paper bag at room temperature.Once ripe, mangos should be moved to the refrigerator, which will slow down the ripening process.Whole, ripe mangos may be stored for up to five days in the refrigerator.Mangos may be peeled, cubed and placed in an airtight container in the refrigerator for several days or in the freezer for up to six months.nce ripe, mangos should be moved to the refrigerator, which will slow down the ripening process. Whole, ripe mangos may be stored for up to five days in the refrigerator. Mangos may be peeled, cubed and placed in an airtight container in the refrigerator for several days or in the freezer for up to six months.