Mioses/Mitoses Flashcards
Meiosis
: the process of producing four daughter cells, each with single unduplicated chromosomes.
Haploid:
Cells that haveChromosomes that are not paired up with similar Chromosomes
Diploid
: Cells that have normal sets of paired Chromosomes
Gametes
4 haploid cells
Meiosis 1 (Reduction) ends with…
Two haploid cells
Meiosis 2 (Division) ends with…
4 HAPOID cells with not duplicate Chromosomes
Order of meiosis and mitosis stages:
: PMAT!!
Prophase 1 (after chromosome replication):
Homologous chromosomes form TETRAD at SYNAPSE, CROSSING OVER occurs, then Nuclear Membrane dissolves, spindle fibers form and attach beginning to move chromosomes
Metaphase 1:
Homologous pairs line up on equator plane and randomly sort.
Anaphase 1:
(Simple Pull apart) Separation of one of each chromosome pair to separate ends of cell
Telophase 1:
(Nuclear Membrane forms sometimes) Chromatin does not form. Spindles disappear Plasma membrane forms two 2 haploid cells. (Cytokinesis is not apart of telophase 2)
Prophase 2:
Nuclear Membrane dissolves (if had formed), spindle fibers form again beginning to move chromosomes
Metaphase 2:
Chromosomes line up on equatorial plane
Anaphase 2:
(Simple Pull Apart) Centromere divides and microtubules pull duplicates from originals to opposite ends of cell
Telophase 2:
Nuclear membrane forms, chromatin forms, spindles disappear then cytokinesis… 4 cells separate, chromatin reforms