Question

In snapdragons plants , the alleles for red and white flowers show incomplete dominance and results in a pink flower . Cross a pink snapdragon with a pink snapdragon . Show genotypic and phenotypic percentages of the generation

Answer 1

In snapdragons, the gene for flower color has two alleles, R (red) and W (white). If a plant has the genotype RR, it will have red flowers, if it has the genotype WW, it will have white flowers, and if it has the genotype RW, it will have pink flowers because of incomplete dominance.

When two pink snapdragons (RW x RW) are crossed, their offspring will have the following genotypic and phenotypic ratios:

Genotypic ratios:

RR: 25%

RW: 50%

WW: 25%

Phenotypic ratios:

Red flowers: 25%

Pink flowers: 50%

White flowers: 25%

In this case, half of the offspring will have the same genotype (RW) and phenotype (pink) as the parents, while the other half will have different genotypes (RR and WW) and phenotypes (red and white).