Campbell Biology in Focus, Books a la Carte Edition; Modified Mastering Biology with Pearson eText - ValuePack Access Card - for Campbell Biology in Focus (2nd Edition)
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Chapter 22.4, Problem 2CC

Summarize evidence that the yup flower-color locus acts as a prezygotic barrier to reproduction in two species of monkey flowers. Do these results demonstrate that the yup locus alone controls barriers to reproduction between these species? Explain.

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Reproduction: Crash Course Zoology #9; Author: CrashCourse;https://www.youtube.com/watch?v=poLyJDVjKlM;License: Standard youtube license