THE answer is <span> cell, organism and tissue</span>
George Washington Youre welcome ^.^
-Ella
Here, R is dominant over r.
Now, RR × Rr cross, results in:
2 RR & 2 Rr
So, genotypic ratio = RR : Rr = 1:1
Phenotypic ratio = Dominant : Recessive = 1:0
Hope this helps!