When Crossing a True-Breeding Red Snapdragon Flower with a True-Breeding

question 58

Multiple Choice

When crossing a true-breeding red snapdragon flower with a true-breeding white flower of the same species,all offspring are pink.This would seem to support the pre-Mendel view that inheritance is a blending of parental traits.However,Mendel and conventional wisdom agree that "blending" of parental traits is not correct and that particles of inheritance are actually involved.Which of the following statements supports the idea of particulate inheritance? Select all that apply.

• A)Two parents that show the incompletely dominant phenotype produce some offspring that are red and some that are white.
• B)Over many generations of crossing individuals with the incompletely dominant phenotype,all the progeny are pink.
• C)There is no way to directly prove that incomplete dominance is not a case of blending.
• D)In meiosis,alleles of different genes assort independently of each other during gamete formation.

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