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Peer reviewedLaferriere, Joseph E. – American Biology Teacher, 1989
The concept of paraphyly is defined and its importance in the teaching of evolution and taxonomy is discussed. Examples are included to illustrate this concept. A list of 14 references is provided. (CW)
Descriptors: Biological Sciences, Biology, Classification, College Science
Peer reviewedLaferriere, Joseph E. – American Biology Teacher, 1992
The carpel is a highly modified leaf enclosing the ovules. This article describes methods for teaching about the evolution of the carpel and the nature of carpel fusion. Presents an illustration of the evolution of the most common types of compound pistil arrangement from the ancestral single-carpel marginal type of placentation. (PR)
Descriptors: Biological Sciences, Biology, Evolution, Higher Education
