G= Growth cells grow, do their job at the end of this the cell decides whether or not it wants to have kids.
cells copy all 46 pieces of DNA in the nucleus (replication) DNA unzips and fills in with matching nucelotides adenine, thymine, guanine, cytosine. If you want to make 2 cells, each new cell is going to need its own copy.
centrioles to the opposite ends of the cell nucleus goes away DNA coils up into chromosones.
the 2 copies that make up the X are split aprt and 1 copy goes to each side of the cell near the centrioles, the organelles are split up during the phase as well.
the 2 copies that make up the X are split apart and 1 copy goes to each side of the cell (near the centrioles) the organelles are split up during this phase as well
when DNA is loose and relaxed and looks like sphagetti. can only look like this when its inside the nucleus and protected.
one of each pair comes from your mom and the other from dad these pairs are called?
nucleus disappears cenrioles move to opposite ends of the cell and produce spindle fibers. DNA condenses into chromosones. homologous chromosones find eachother.
cell begins to pinch apart sometimes a new nucleus forms these new cells are not identical these new cells are not identical they have 1/2 the original amount of DNA 1 set and are now haploid.
just like mitosis just with 2 cells instead of 1. in between meiosis 1 and 2 some cells go through another interphase but many do not. the end result is 4 haploid cells gametes.
trisonmy of the 21st chromosome low muscle tone babies appear floppy flat facial features with a small nose upward slant to eyes small skin folds on the inner corner heart problems
x chromosome monosomy only X female XO short do not mature sexually some physical abnormalities webbed neck mental retardation not increase over normal.