Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Consider an organism of karyotype 2n = 4. Which diagram properly depicts metaphase I?

Transcribed Image Text:The image illustrates the stages of mitosis, specifically focusing on the behavior and alignment of chromosomes. Each panel, labeled a to d, represents a different phase in the mitotic process:
- **a) Prophase**: The chromosomes are visibly condensed and appear as distinct structures. They are not yet aligned.
- **b) Metaphase**: The chromosomes align at the cell's equatorial plane, known as the metaphase plate. They are organized in a straight line across the center of the cell.
- **c) Anaphase**: The sister chromatids are separated and begin moving towards opposite poles of the cell. The centromeres split, allowing the chromatids to be pulled apart.
- **d) Telophase**: The chromatids have reached the poles, and the nuclear envelope begins to reform around each set of chromosomes, completing the cell division process.
This series of stages shows the meticulous organization and separation of genetic material essential for cell division and replication.
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