The phase of mitosis during which the nuclear envelope fragments and the nucleoli disappear is called PROPHASE.
During which phase of mitosis does the nuclear envelope fragment quizlet?
Prophase is the first phase of mitosis. During this phase, the sister chromatids condense, the nuclear envelope and nucleoli disappear, and the spindle apparatus forms.
What moves chromatids during mitosis?
During mitosis, several types of microtubules are active. The motor proteins associated with the interpolar microtubules drive the assembly of the spindle. Note the other types of microtubules involved in anchoring the spindle pole and pulling apart the sister chromatids.
What happens to the nuclear envelope during metaphase?
The nuclear envelope does not disappear in metaphase of mitosis, because it already did in prophase. … The nuclear envelope needs to be broken apart so that the chromosomes can be found, aligned in the middle of the cell, and then pulled apart.
What is it called when spindle fibers disassemble?
Anaphase. -The spindle fibers disassemble during anaphase. As the spindle fibers shorten during anaphase, they separate the chromatids from one another and then move them to opposite poles.
During which phase of mitosis do the chromosomes separate quizlet?
Anaphase– The chromosomes separate and move along spindle fibers to opposite ends if the cell.
Where does mitosis occur in the body?
Cell division by mitosis occurs in all human body cells except the gonads (sex cells). During mitosis, the DNA is exactly copied and a new daughter cell created with the same number of chromosomes as the parent cell, ie 46.