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Metaphase I

Definition

Metaphase I is a stage of meiosis where homologous chromosomes (pairs of mother and father chromosomes) align at the equator of the cell.

Analogy

Think of Metaphase I as a game of tug-of-war. The homologous chromosomes are the teams on either side, and they're lined up in the middle of the field (the equator), ready to pull against each other.

Related terms

Homologous Chromosomes: These are pairs of chromosomes, one from each parent, that are similar in shape, size, and genetic content.

Equatorial Plate: This is an imaginary line in the middle of the cell where chromosomes line up during metaphase. It's like the center line in our tug-of-war analogy.

Spindle Fibers: These are protein structures that move chromosomes during cell division. They're like ropes used by each team in our tug-of-war game.

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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.