ananip18 ananip18

03-03-2020
Biology

contestada

What is happening to the doubled chromosomes in step 3 and 4?

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Ms4124043 Ms4124043

03-03-2020

Before cell division, chromosomes exist as long strand s of DNA loosely coiled in the nucleus. Just before cell division begins, the amount of DNA doubles and so do the chromosomes. The DNA and protein in the doubled chromosomes coil up tightly.

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