Question

After crossing purebred red (dominant) and purebred white (recessive) flowers, pink flowers appeared. Using symbols, show the cross between pink and white flowers.
Rr x rr
RR x rr
Rr x RR

Answer 1

Since after crossing a red and a white flower produced pink flowers, the red color trait shows an incomplete dominance and has a genotype of Rr.
Using the Punnett to determine the cross between pink and white flowers:
   |   R   |   r   |
r  |  Rr  |   rr   |
r  |  Rr  |   rr   |

The results indicate that the cross between pink and white flowers will produce a ratio of 1:1 pink to white flowers.

Answer 2

Rr × rr
(pink) (white)
| \ |
R r r

Therefore, Rr = pink and rr = white

Hope this helps!