Mitosis stages Flashcards
what is the first stage of mitosis?
prophase
in prophase what happens first?
- chromosomes condense with histone proteins into a compact form
in prophase what happens 2nd?
the nucleolus disappears
in prophase what happens 3rd?
the nuclear envelope breaks apart
in prophase what happens 4th?
mitotic spindle forms microtubules around the centrosomes
in prophase what happens 5th?
the centrosomes move to opposite sides of the cell.
the 2nd stage of mitosis is..
Prometaphase
what happens 1st in prometaphase?
kinetochores are formed on both sides of the centromere
what happens 2nd in prometaphase?
microtubules attach to the kinetochores
what’s the 3rd stage of mitosis?
Metaphase (middle)
what happens 1st in the metaphase..
sister chromatids are put along the center of the cell (metaphase plate)
what’s the 4rd stage of mitosis?
anaphase
what happens in anaphase?
sister chromatids move to opposite sides of the cell
what’s the 5th stage of mitosis?
Telophase
what happens in telophase?
chromatids arrive in opposite sides of the cell and decondense
what happens 2nd in telophase?
miotic spindles disassemble and 2 nuclear envelopes reform