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- Variations in Chromosome NumberAneuploidy Describe the process of nondisjunction and explain when it takes place during cell division.How would Shugoshin does not break down after anaphase I of meiosis affect the outcome of mitosis or meiosis?During meiosis, cells undergo two rounds of nuclear and cell division, but only one round of DNA synthesis. Describe the main differences between anaphase of mitosis and anaphase I in meiosis. Why are these differences important for meiosis to occur correctly?
- In meiosis, each centromere has a spindle fiber attached only to one side. In mitosis, each centromere has a spindle attached to how many sides?Obvious differences in the position of chromosome copies are clear during metaphase of mitosis and meiosis. How would you describe these changes?A cell in prophase 2 of meiosis has 12 chromosomes. Given this information, answer the following questions. how many chromosomes are present in the cell during prophase 1 of mitosis? And, how many chromosomes are present during prophase 1 of meiosis?
- What materials provide the substance of a densely staining chromosomes present during mitosis?If a rabbit has 22 chromosomes in each of its body cells, how many chromosomes will be in each daughter cell after mitosis?In kangaroos, the somatic cells are diploid, having 22 chromosomes. How many chromosomes are present in each cell at metaphase II of meiosis?
- illustrate and briefly describe the alignment, pairing, and disjunction ofsister chromatids during mitosis. Include the molecular complexes cohesin and shugoshin and the enzyme separase.In mitosis, what chromatid combination(s) will be present during metaphase? What combination(s) will be present at each pole at the completion of anaphase?In a turtle species, a diploid cell in the G1 phase of the cell cycle contains 22 picograms of DNA (picogram is a measure of the total mass of the DNA present). How much DNA is present in a cell of the same species at prophase II of meiosis (prophase of the second meiotic division)?