Meiosis I: Synapsis, Crossing Over, and Independent Assortment
Students will learn the overall word equation for photosynthesis and understand that plants use light energy to convert carbon dioxide and water into glucose and oxygen.
About This Topic
Students will learn the overall word equation for photosynthesis and understand that plants use light energy to convert carbon dioxide and water into glucose and oxygen.
Key Questions
- Explain how synapsis and crossing over during prophase I generate novel allele combinations, and calculate the theoretical number of genetically unique gametes producible from a diploid organism with n chromosome pairs.
- Analyse how independent assortment of bivalents at metaphase I contributes to genetic variation independently of crossing over, and explain why independent assortment is described as a random process.
- Compare the fate of homologous chromosomes at the end of meiosis I with the fate of sister chromatids at the end of mitosis, explaining why meiosis I is the reductional division and results in haploid secondary oocytes or secondary spermatocytes.
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