Blueberry bushes

my son has a science invention project, i would like to know if it is possible, and what would i need to do “graph a piece of one on the other ?”
would it have fruit and what type of fruit would it be blueberry, raspberry or a combonation?

if it grew fruit, would it have blueberry’s and or raspberry’s or a new fruit in general. or no fruit at all. To grow this bush would I have to graph a piece of one bush on the other?

I just got 2 of those small fruit plants that you can get at Lowe’s or Wal-mart… and the container said that they are one year old. The blueberry bush is maybe 1 foot tall, and the raspberry maybe 6 inches. I live in Southern New England. when will it produce fruit!? Thanks!

I have a blueberry pie recipe, and if i just replaced the blueberries with raspberries, would it work? If not, could send me a recipe for raspberry pie, preferably open-faced?
here’s the recipe
Pate Brisee (Short Crust Pastry):
2 1/2 cups (350 grams) all-purpose flour
1 teaspoon salt
2 tablespoon (30 grams) granulated white sugar
1 cup (226 grams) unsalted butter, [...]

Anyone know of a good website for someone who would like to try this?

I’m getting two blueberry and two raspberry bushes in late march/early april. Each plant is two years old, and ready to bear fruit. What are the steps I should take to get a good harvest?