Incomplete dominance Transitional Reasoning Practice

Questions

1. 1.

   A botanist studies petal coloration in a plant species where homozygous individuals have either red petals ($C^R C^R$) or white petals ($C^W C^W$), and heterozygotes display an intermediate pink phenotype ($C^R C^W$). To analyze a specific cross, the botanist pollinates a pink-flowered plant with pollen from a true-breeding red-flowered plant, yielding 240 seedlings. Based on the principles of incomplete dominance, which expectation correctly describes the phenotypic outcome of these seedlings?

   • A) 60 pink seedlings, showing a phenotypic ratio of 3 red : 1 pink
   • B) 240 pink seedlings, showing a uniform intermediate phenotype
   • C) 120 pink seedlings, showing a phenotypic ratio of 1 red : 1 pink
   • D) 180 pink seedlings, showing a phenotypic ratio of 1 red : 2 pink : 1 white

Answers and step-by-step solutions appear after you finish the test.