How do you determine the appearance of this F1 tomato?

Here is the whole question, please try and answer as much as you can. In tomatoes, red fruit color is dominant to yellow. Suppose a tomato plant homozygous for red is crossed with one homozygous for yellow. Determine the appearance of the F1 tomatoes, F2 tomatoes, the offspring of a cross of the F1 tomato back to the red parent, the offspring of a cross of the F1 tomatoes back to the yellow parent.|||you must first assigned this:





homozygous red tomato: RR


homozygous yellow tomato: rr





F1 : RR (homozygous red) X rr(homozygous yellow)





the offspring would all be RED (heterozygous red) that is Rr





F2: Rr X Rr





the offspring would be: RR , Rr





offspring F1 cross with parent RR





Rr X RR





the offspring would be RR, RR, Rr, and Rr





the F1 cross to parent yellow rr





Rr X rr --%26gt; offspring is Rr and rr





note:





RR: homozygous red


Rr: heterozygous red


rr: yellow