Incomplete dominance Original Scenario-Based Download PDF

Questions

1. 1.

   On an expedition to a bioluminescent cavern, botanists discover a rare glowing flora known as the Moon-Lily, where true-breeding obsidian-black flowers crossed with true-breeding crystal-white flowers produce offspring with entirely smoky-grey petals. Genetic analysis confirms that petal coloration in this species is governed by a single gene exhibiting incomplete dominance. If two smoky-grey Moon-Lilies are cross-pollinated, what phenotypic distribution is expected among their progeny?

   • A) 100% smoky-grey offspring because blended traits become permanently fixed across subsequent generations
   • B) 75% obsidian-black and 25% crystal-white offspring due to the complete dominance of the darker pigment
   • C) 25% obsidian-black, 50% smoky-grey, and 25% crystal-white offspring
   • D) 50% obsidian-black and 50% crystal-white offspring with no intermediate smoky-grey individuals