4. In snapdragons, a gone that affects flower color has two alleles: red (R) and white (W). In heterozygous individuals, the phenotype is pink.

a. What is the genotype of a pink flower?

b. Show a cross between two pink snapdragons

and give the expected genotype and phenotype.

See the answer below

Explanation:

a) Since the pink phenotype is heterozygous, the genotype would be RW.

b) The pink genotype is RW. Hence, a cross between two pink snapdragons will go thus:

          RW    x    RW

      RR    RW    RW    WW

Expected genotypes: 1/4 RR, 1/2 RW, 1/4 WW

Expected phenotypes: 1/4 red-flowered plants, 1/2 pink-flowered plant, 1/4 white-flowered plant.