8th_meiosis - Meiosis and Sexual Life Cycles Campbell et...

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Meiosis and Sexual Life Cycles Campbell et al. Biology. 8th ed., Chapter 13 Study hint: While working through this study guide, make a list of key terms in the right margin. Usually, these terms are boldfaced in the study guides or they appear in the referenced figures . Consult one of the glossaries if you are not sure of definitions. Concept checks : all 0. Application 1. What is a common cause of trisomy 21 ? Why does the age of the mother matter? 2. Trisomy 21 is one of very few trisomies that make it to birth – explain why. 3. Why are aneuploydies involving sex chromosomes more common than aneuploydies involving autosomes ? 4. Read the interview with Terry L. Orr-Weaver on pp.246-247. Dr. Weaver states that we humans are “unbelievably bad at carrying out meiosis”. I. The big picture 5. Key concepts: Meiosis (sexual reproduction) can be considered an adaptive response to the challenge of an ever-changing environment. Why?
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8th_meiosis - Meiosis and Sexual Life Cycles Campbell et...

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