Lab 8-Cell Division Flashcards
In _________ reproduction, cells divide by the process known as mitosis.
asexual
Mitosis produces:
two identical daughter cells from a single parent cell.
Mitosis functions to facilitate _________ of an organism and to replace _________ or worn-out cells.
growth; damaged
________ is the sexual form of cell division.
Meiosis
Meiosis produces:
genetically different daughter cells from a single parent cell.
The function of meiosis is to:
create genetic variability among offspring.
A cell typically spends ___% of its life in interphase and ___% in the mitotic phase.
90; 10
Interphase
no cell division is occurring; all of the DNA in a cell is uncoiled.
Mitotic Phase
DNA becomes highly coiled in the form of individual chromosomes.
Before a cell can undergo mitosis, it must first:
replicate its DNA during a late stage of interphase.
Two identical copies of the DNA
sister chromatids
Two sister chromatids are held together by the ________.
centromere
The mitotic phase is divided between:
mitosis and cytokinesis
_______ divides the nuclear contents of the cell.
Mitosis
_______ divides the cytoplasm.
Cytokinesis
Four basic stages of mitosis include:
(1) Prophase
(2) Metaphase
(3) Anaphase
(4) Telophase
During what phase of mitosis does the nuclear envelope disappear and chromosomes begin to condense, thicken, and attach to spindle fibers?
Prophase
During what phase of mitosis do chromosomes line up along the equator?
Metaphase
equator is called metaphase plate
During what phase of mitosis do chromosomes split and individual sister chromatids move towards opposite poles?
Anaphase
During what phase of mitosis do chromosomes start to decondense? Nuclear envelope also returns during this stage.
Telophase
During cytokinesis of a plant cell a _______ forms.
cell wall/plate
During cytokinesis of an animal cell a ________ forms.
cleavage furrow
