There are 34 chromosomes in the nucleus of an apple-tree cell. How many will there be before the division?

There are 34 chromosomes in the nucleus of an apple-tree cell. How many will there be before the division? How many will there be after division of each cell?

When all cells are dividing, except for sex cells, the number of chromosomes is unchanged. This is so that the cells do not change their properties. In one of the phases of division, the number of chromosomes is doubled, which means there will be 68 of them. After division, each cell will have 34 chromosomes.



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