Mitosis & Asexual Reproduction Flashcards
Mitosis
Nucleus divides up into 2 new daughter cells, it’s the first step of cell division
The daughter cells are identical to the parent cell
Cell Division
The cell goes through 5-6 phases and produces 2 daughter cells
The cell’s DNA are identical
Cytokinesis
Cytoplasm divides in the second stage of cell division
The separation of one cell into two is accomplished by a structure called the contractile ring
Interphase
When cells start to grow during a phase in between cell division
DNA starts to be organized= chromatin
Cell cycle
Series of phases cells are being developed(IPMAT)
There are 5 steps and all have to do with dividing the nucleus to make 2 daughter cells
Prophase
Longest event of mitosis. Chromosomes start doubling and the nuclear envelope disappears
DNA copies attach to each other so each chromosome have two copies of the same genes in the same locations
Metaphase
Chromosomes start to line up in the middle
When sister chromatids pull apart each new cell get a complete set of DNA instead of too many or too few copies of one chromosome.
Anaphase
The chromatids pull away from each other
Important to ensure a full set of DNA in the daughter cells
Telophase
Nuclear envelope starts to become visible again and chromosomes start to lose their shape
It occurs in the animal cell
Chromosomes
Strands of genetic material(paired chromatids)
Carry information to help cells grow, thrive, and reproduce
Sister chromatids
Connected strands of 2 identical chromosomes
1/2 of the duplicated chromosome
Chromatin
Strands of thin and unorganized genetic material
DNA replicates when there are a total of 2 complete copies
Cancer
Cells uncontrollably divide and don’t respond to growth regulation signals.
Cancer can cause hair loss and many other symptoms
Asexual reproduction
Single parent reproduces itself to make 2 identical daughter cells
Benefit: It happens quickly so it doesn’t waste time finding a mate and if it has good genes then the offspring will have good genes too
DNA replication
DNA copies itself
When the replication is over with one half of the DNA is identical to each other and one is identical to the original