Cell Cycle
cell cycle phase that includes cell growth, cell functions and DNA replication
Interphase
what is the purpose of mitosis
create more somatic cells
purpose of meiosis
entire genome
chromatin
sugar in DNA
deoxyribose
stage of cell cycle that includes nuclear division
mitosis
when does the nuclear envelope disappear?
product of meiosis
4 haploid cells
each side of a chromosome after replication has occured
sister chromatid
DNA is made up of
nucleotides
overgrowth of cells
cancer
when do sister chromatids get separated
anaphase
what gets separated in anaphase 2
sister chromatids
number of chromosomes in a gamete
23
took a photo of DNA and determined that DNA is a double helix
Franklin
where are the checkpoints in the cell cycle
end of G1
end of G2
mitosis (specifically metaphase)
what occurs in metaphase
chromosomes line up in the middle of the cell
when does crossing over occur?
prophase 1
a pair of the same chromosome that are the same size, shape and have the same genes on them
homologous chromosome
DNA strands are ___ meaning that they run in opposite direction
what is the main difference in meiosis 1 and meiosis 2
meiosis 1- homologous chromosomes separate
meiosis 2- sister chromatids separate
what is the difference in cytokinesis of plant and animal cells?
plant cells- form a cell plate
animal cells- form a cleavage furrow
why does meiosis occurs in 2 steps?
to reduce the diploid cells to haploid
protein in the center of a chromosome that holds the two sister chromatids together
kinetochore
this checkpoint is checking for DNA damage
end of G1