Programmed cell death
Apoptosis
Mitosis forms 2 ______________ daughter cells.
Identical
Uncontrolled cell division is called
cancer
Meiosis creates ____ genetical ___________ daughter cells.
4, different
The type of cell division that creates sperm and egg cells.
Meiosis
Failure of sister chromatids to separate during meiosis
Nondisjunction
DNA replication occurs in which stage of the cell cycle?
S phase (Interphase)
These exist at G1, G2, and M phase to make sure the cell is dividing properly
Checkpoints
A female squirrel's egg cell contains 20 chromosomes (n). How many chromosomes would her skin cell (2N) contain?
40
Starts with a diploid cell.
Both
The second stage of mitosis where chromosomes line up in the middle
Metaphase
Bacteria reproduce via binary fission which allows them to reproduce faster but have less genetic variation. This is what type of reproduction?
Asexual
True or False
Cancer cells have more numerous mutations, divide faster, and may spread through the body.
True
In humans how many chromosomes does each parent contribute to their offspring?
23
Number of chromosomes goes 2N to N.
Meiosis
Two identical copies of chromosome where spindle fibers attach
Sister Chromatid
A scientist looking at cells under a microscope would know that the cell is in the metaphase stage when what occurs?
The chromosomes line up in the middle.
What would happen to a person that was exposed to excessive radiation? (radiation is a carcinogen)
They would have an increased risk of cancer.
What stage of Meiosis is this?
Metaphase I
This is the cell division needed to fix a wounded knee.
Pair of matching chromosomes, with one inherited from each parent
Homologous Chromosomes
Put the 8 steps of the cell cycle in order. Starting with G1 and ending with Cytokinesis.
G1,S,G2,Prophase,Metaphase,Anaphase,Telophase, Cytokinesis
A cell may exit the cell cycle and enter into this new stage of life, where they no longer divide. This is what happens to brain tissue.
G0
What occurs during Prophase I of meiosis?
Crossing Over
Interphase occurs before the start of the process