Snapdragons exhibit incomplete dominance.?

Snapdragons exhibit incomplete dominance. If two F1 hybrids from the same parental cross both exhibited white flowers, which of the following crosses is most likely to be the parents: (A) pink snapdragon X pink snapdragon; (B) red snapdragon X white snapdragon; OR (C) pink snapdragon X white snapdragon. Explain your answer clearly and be sure to address each of the options separately (HINT: Use Punnett Squares!).

Snapdragons exhibit incomplete dominance.?
The answer would be (C)





As u can see, the snapdragon exhibits incomplete dominance. Neither the colour red nor white is dominant. When crossed, u get a pink snapdragon.





Lets take the alphabet r for red and w for white





(A) rw x rw


You would get the genotype and phenotype ratio of 1 : 2 : 1 to represent red : pink : white





(B) rr x ww


All offsprings would be pink in colour





(C) Rw x ww


You would get the genotype and phenotype ratio of 2 : 2 to represent pink : white


(C) would most likely be the parents as there is a 50-50 chance in getting either a pink or white offspring