In snapdragons, flower color is determined by a gene that follows an incomplete dominance pattern. In this species, the red allele (R) produces red flowers, and the white (W) allele produces white flowers. The heterozygous individual produces a blended phenotype of pink flowers.

Question

If a red snapdragon is cross pollinated with a pink snapdragon, calculate the probability that the offspring will have white flowers.

(1 point)
Responses

0%
0%

100%
100%

25%
25%

50%

Answer 1

To determine the probability of offspring with white flowers from a cross between a red snapdragon (RR) and a pink snapdragon (RW), we can use a Punnett square.

1. The red snapdragon has the genotype RR.
2. The pink snapdragon has the genotype RW.

Now, we set up a Punnett square:

         R     R
      ----------------
    |    R    |    R   |
   ---------------------
RW |    RW   |   RW   |
   ---------------------

From this Punnett square, we can see the possible genotypes of the offspring:

• 50% will be RR (red flowers)
• 50% will be RW (pink flowers)

Since there are no combinations that yield WW (white flowers) in this cross, the probability of getting offspring with white flowers is 0%.

Therefore, the answer is:

0%