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Why Do Chromosomes Resemble the Letter X When Viewed During

Question 22

Multiple Choice

Why do chromosomes resemble the letter X when viewed during metaphase?


A) Because they all appear and function as X chromosomes at that stage.
B) Because there are two sister chromatids joined at a point in the middle (the centromere) .
C) Because microtubules encircle and attach pairs of chromosomes to each other at the centromere.
D) Because each X-shaped structure is actually four chromosomes joined at the centromere.

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