• Tasks. The corresponding task is for students to attempt to
apply their understanding of meiosis to explain Mendel’s
What Phenomena in Real Life Can Be Explained by
• Expectations. Students will explain that polyploidy occurs when
chromosomes fail to separate in meiosis. Polyploidy is rare in
animals and almost always causes death; however, the same pro-
cess frequently occurs in plants, and many polyploidy plants
have significant commercial value.
• Resources. The corresponding resources are pictures of triploid
(3n) bananas, triploid (3n) apples, hexaploidy (6n) wheat, and
• Tasks. Students must appreciate the value of a thorough understanding of meiosis and genetics for plant breeders. Students must
Figure 3. The stages of meiosis. There is a single round of chromosome replication followed by two rounds of cell division. Note
the chromosome behavior in each phase (Biggs et al., 2004; used with permission of the publisher).