Flower color in snapdragons is an incompletely dominant trait; progeny of crosses between true- breeding red- and white-flowered plants have pink flowers. A cross between two snapdragon plants yielded progeny with all 3 flower colors. What can be inferred about the phenotypes of the parents? We cannot infer the phenotypes of the parents Both parents had red flowers One parent had red flowers and the other had white flowers Both parents had pink flowers Both parents had white flowers

Human Anatomy & Physiology (11th Edition)
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Flower color in snapdragons is an incompletely dominant trait; progeny of crosses between true-
breeding red- and white-flowered plants have pink flowers. A cross between two snapdragon plants
yielded progeny with all 3 flower colors. What can be inferred about the phenotypes of the parents?
O We cannot infer the phenotypes of the parents
Both parents had red flowers
O One parent had red flowers and the other had white flowers
O Both parents had pink flowers
O Both parents had white flowers
Transcribed Image Text:Flower color in snapdragons is an incompletely dominant trait; progeny of crosses between true- breeding red- and white-flowered plants have pink flowers. A cross between two snapdragon plants yielded progeny with all 3 flower colors. What can be inferred about the phenotypes of the parents? O We cannot infer the phenotypes of the parents Both parents had red flowers O One parent had red flowers and the other had white flowers O Both parents had pink flowers O Both parents had white flowers
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Step 1: Analyzing the Information

In the case of snapdragons, the expression of flower colour exhibits partial dominance as a genetic feature. When individuals of a red-flowered plant variety that consistently produce offspring with the same red flower colour (RR) are bred with individuals of a white-flowered plant variety that consistently produce offspring with the same white flower colour (WW), the resulting offspring exhibit a pink flower colour (RW).

In the event where a hybridization event between two snapdragon plants resulted in offspring displaying all three flower colours (red, pink, and white), it becomes necessary to examine the potential combinations of alleles present in the parental plants.

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