Cell Cycle
During what part of the cell cycle does DNA replicate?
S phase of Interphase
A replicated chromosome is made up of 2 sister _____ attached by a centromere.
chromatids
What type of cells will divide by mitosis?
somatic (body) cells
What type of cells will divide by meiosis?
sexual reproduction cells
Does mitosis or meiosis result in new cells with genetic material that is identical to the original cell?
mitosis
What are the phases of nuclear division?
Prophase, metaphase, anaphase, telophase
Anaphase is the stage where the ____ _____ begin to pull the chromosomes apart to opposite poles.
spindle fibers
Mitosis results in how many cells?
What is the scientific word for daughter cells resulting from meiosis?
gametes (egg or sperm)
In what stage does a cell spend most of its life?
interphase
What is dividing during cytokinesis?
cytoplasm
Sister chromatids are attached with that structure?
Chromosomes will align on an equator during what phase of mitosis?
metaphase
After meiosis is complete, are the daughter cells haploid or diploid?
haploid
How many pairs of chromosomes do we have in our cells at any given moment?
23 pairs.. that is 46 chromosomes total
Chromosomes are separated in what phase?
anaphase
The pairing up of homologous chromosomes is called what?
Tetrad
After mitosis is complete, are the daughter cells haploid or diploid?
diploid
What percentage of the DNA of the original cell is present in each new cell after meiosis?
50%
A new potato can grow from another potato. This is an example of: a) sexual reproduction b) good gardening c) asexual reproduction
asexual reproduction
What will happen when a cell cycle contains errors and ignores signals to stop dividing, causing cells to die?
cancer
During Prophase 1 of meiosis, crossing-over of homologous chromosomes takes place, forming tetrads. What exactly is being exchanged during this?
Genes
In mitosis, what happens to the nuclear membrane during Prophase?
It dissipates/disappears.
In meiosis, will crossing-over take place in both Prophase 1 and Prophase 2?
No, it will only take place during Prophase 1.
During metaphase 1 of meiosis, the specialized structure ______ is aligned along the equator.
During metaphase 2 of meiosis, _____ is aligned at the equator.
metaphase 1 - tetrads
Metaphase 2 - chromosomes