Use the Following Information When Answering the Corresponding Question(s)

question 25

Multiple Choice

Use the following information when answering the corresponding question(s) .
The following question(s) are based on information from Frank M.Frey,"Opposing Natural Selection from Herbivores and Pathogens May Maintain Floral-Color Variation in Claytonia virginica (Portulacaceae) ," Evolution 58(11) ,2004: 2426-37.
-Claytonia virginica is a woodland spring herb with flowers that vary from white to pale pink to bright pink.This plant is primarily pollinated by a bee that prefers pink flowers to white flowers.Claytonia with pink flowers have greater relative fruit set than Claytonia with white flowers.Nevertheless,the percentage of different flower colors remains stable in the study population from year to year.Which of these statements might explain this observation?

• A)Reproductive success does not affect evolution in this species.
• B)Flower color is not heritable but is instead environmentally determined.
• C)The white flowers have evolved pollinator resistance.
• D)Fitness is primarily determined by fruit set in this species.
• E)There are repeated mutations for white flowers in this species.

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