Mitosis

Question 1

what happens in interphase

Answer 1

all of the DNA in the nucleus is replicated, Each DNA molecule is converted into two identical DNA molecules called chromatids, all the organelles are replicated and the cell grows in size

Question 2

what happens during prophase

Answer 2

chromatin fibres condense to form chromosomes, the nucleolus disappears, nuclear membrane breaks down, centrioles migrate to the poles of the cell, spindle fibres are formed and attach to the centromeres and start to move the chromosomes to the centre of the cell

Question 3

what happens during metaphase

Answer 3

the chromosomes are moved by the spindle fibres to form the metaphase plate in the cell centre

Question 4

what happens during anaphase

Answer 4

the chromatids are separated and pulled to opposite poles of the cell by the spindle fibres

Question 5

what happens during telophase

Answer 5

chromatids are now chromosomes, the chromosomes assemble at each pole and the nuclear envelope reforms, chromosomes uncoil into chromatin, nucleolus forms

Question 6

what happens in cytokinesis

Answer 6

the actual division of the cell into two separate cells, begins during telophase