Meiosis in Cell Division
Grade 11•45 minutes•Explain the function of meiosis in sexual reproduction. Distinguish between somatic cells, germ-cell, and gametes; also between autosomes and sex chromosomes. Describe the stages of meiosis and include a description of how homologous chromosomes pair during prophase I, and the behavior of chromosomes through both meiotic divisions. Explain why meiosis I is called a reductional division and meiosis II is called an equational division. Compare and contrast mitosis and meiosis. Explain how crossing over, independent assortment of homologous chromosomes, and random fertilization account for an increase in genetic variation. Describe the technique of karyotyping and the uses for it. Explain how nondisjunction could result in an altered number of chromosomes and describe alterations in chromosome structure that may occur.
Learning Objective
I can explain the stages of meiosis and how they contribute to genetic variation in sexual reproduction.
Practice Questions
This lesson includes 12 practice questions to reinforce learning.
View questions preview
1. What is meiosis, and how does it differ from mitosis in terms of the types of cells produced?
2. Explain the significance of interphase in the process of meiosis and describe what occurs during this stage.
3. Describe the process of crossing over that occurs during prophase I of meiosis. How does this contribute to genetic variation?
...and 9 more questions
Educational Video
Meiosis (Updated)
Amoeba Sisters