Mitosis Flashcards
After replication of chromosomes, each replicated chromosome consists of two separate sister ______
chromatids
During the division process, a mitotic ___________ is formed so that the chromosomes are divided equally between the 2 new daughter cells
spindle apparatus
After cell division the 2 new daughter cells should have the same ______ and ______ as the original parent cell
number of chromosomes same genetic info
In mitosis, a diploid 2n cell gives rise to two new _____ cells
diploid
What are the 5 stages of mitotic nuclear division?
Prophase Pro-metaphase Metaphase Anaphase Telophase (PPMAT)
After nuclear division is complete, the cell contents divide. This process is known as _______
cytokinesis
During nuclear divisions, chromosomes are separated by __________
microtubules
What are the three types of microtubles?
Astral
Kinetochore
Polar
Interphase: Prior to mitosis, the ___________ and the _________ have already replicated
chromosomes
centrosomes
each centrosome contains a pair of ________
centrioles
What happens at prophase?
Chromosomes start to condense
Sister chromatids become visible
mitotic spindle starts to form OUTSIDEthe nucleus
What happens at pro-metaphase?
Nuclear envelope has broken into small vesicles
spindle microtubles enter nuclear region
microtubles attach kinetechores
What happens at metaphase?
Chromosomes held in tension at the metaphase plate, halfway between poles
Chromosomes are attached to kinetochore microtubles
What happens at anaphase?
Sudden separation of the sister kinetochores
Polar microtubles lengthen
Kinetochore microtubules shorten
What happens at telophase?
Nuclear envelope starts to reform
Chromosomes expand and decondense
Cytoplasm constricts
After cytokinesis, cells return to interphase
