Question

A pink flowered Snapdragon plant was crossed with a red flowered Snapdragon plant. What type of phenotype/s is/are expected in the progeny?

• A. Only red flowered plants
• B. Red flowered as well as pink flowered plants
• C. Only pink flowered plants
• D. Red, Pink as well as White flowered plants

Answer 1

The Correct Option is B

In Snapdragons, flower color inheritance demonstrates incomplete dominance, meaning no single allele fully dictates the phenotype. A cross between a red-flowered homozygous dominant Snapdragon (RR) and a pink-flowered heterozygous Snapdragon (Rr) yields offspring whose observable traits can be predicted via a Punnett square.

	R	r
R	RR	Rr
R	RR	Rr

The genotypic distribution of the offspring from this cross is 50% RR and 50% Rr. Phenotypically:

• RR genotypes produce red flowers.
• Rr genotypes produce pink flowers.

Consequently, the offspring will display two distinct phenotypes: red flowers and pink flowers.