Biology
Biology, 19.12.2019 02:31, preciousweeks11

In a cell that is undergoing mitosis, what first happens to the chromosomes after the nuclear envelope breaks down?

a. they replicate to make a new copy of  dna  .

b. they line up at the equator of the cell.

c. they pair up as homologous chromosomes.

d. they are moved to either pole of the cell.

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