Radish Flowers May Be Red, Purple, or White

question 29

Multiple Choice

Radish flowers may be red, purple, or white. A cross between a red-flowered plant and a white-flowered plant yields all-purple offspring. The part of the radish we eat may be oval or long, with long being the dominant trait. If true-breeding red long radishes are crossed with true-breeding white oval radishes, the F1 will be expected to be which of the following?

• A) red and long
• B) red and oval
• C) white and long
• D) purple and long
• E) purple and oval

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Definitions:

Adaptation

The process by which a species becomes better suited to its environment through changes in its characteristics over time.

Stereoscopic Vision

The ability to perceive depth and three-dimensional structure from visual information captured by both eyes.

Primates

An order of mammals that includes humans, apes, monkeys, and prosimians, characterized by large brains, forward-facing eyes, and opposable thumbs.

Homo Heidelbergensis

Early humans living from about 600,000 to 300,000 years ago; some scientists believe that fossils classified as Homo antecessor should be included in Homo heidelbergensis.