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The milestone that defines metaphase is when the chromosomes: A) separate. B) come together. C) are at opposite poles. D) line up. E) cross over.
The milestone that defines metaphase is when the chromosomes: A) separate. B) come together. C) are at opposite poles. D) line up. E) cross over.
Final answer:The unique event that signifies themetaphase stageof cell division is when thechromosomes line up along the middle of the cell,known as the metaphase plate. At this stage, each chromosome is made up of two sister chromatids, which are still closely attached to each other, and the chromosomes are also the most condensed, making them highly visible under a microscope.Explanation:The milestone that defines metaphase in cell division, such as in meiosis or mitosis, is when thechromosomes line upat the equator of the cell, also known as the metaphase plate. This is distinct from the other stages of cell division. For instance, the separation of homologous chromosomes or sister chromatids does not occur until anaphase. During metaphase, each chromosome consists of twosister chromatidsthat are still tightly attached to each other. At this point, thechromosomes are maximally condensedand are at their most visible under a microscope.Learn more about Metaphase here:brainly.com/question/32547874#SPJ11...