Preheat oven to 375 degrees F. Prepare baking pans
In a large bowl mix the flour, baking powder, baking soda, salt, sugar until well mixed. Add the cold butter and with a fork or a pastry cutter cut in the butter until the mixture is like coarse crumbs
Toss in the strawberries and blueberries once the butter is cut in.
Combine the egg, sour cream, and milk. Add to the dry mixture. Mix until the ingredients are combined.
Place the dough on a lightly floured surface and knead a few times. Form the dough into an 8-inch circle. With a pizza cutter cut into 8 wedges.
Place on a prepared baking pan and place in the preheated oven. Bake 15 to 18 minutes.
Remove from oven and place on cooling rack. Cool completely.
For the icing mix the 2 cups of powdered sugar with enough of the lemon juice for the right consistency. Drizzle over cooled scones.