Meiosis Flashcards
The beginning of the condensation of chromosomes.
Leptotene
When homologous chromosomes pair.
Zygotene
Observed with the complete condensation of chromosomes.
Pachytene
The completion of the crossing-over (alleles) of chromosomes.
Diplotene
With the formation of the four (4) sister chromatids.
Diakinesis
Is with tetrad chromosomes (four chromatids) attached to the spindle fibers and aligned at the equator.
Metaphase I
The homologous chromosomes are separated by spindle fibers.
Anaphase I
-The spindle fibers disappear and the nuclear membrane reforms around the chromosomes.
-Is the formation of two (2) diploid daughter cells.
Telophase I
-The organelles are busy performing their metabolic activities, and at the same time duplicating or increasing in number, so that the cell is also increasing in size.
-Between Mitosis and DNA synthesis.
G1 Phase
DNA synthesis is where genetic materials replicate. Hence, each chromosome consists of two (2) sister chromatids.
S Phase
-This is a checkpoint to determine if the cell is ready for the next process, which is cell division, either mitosis or meiosis.
-Protein synthesis is also done in preparation for cell division.
G2 Phase
Centrioles separate and move to opposite poles.
Prophase
Spindle fibers are formed by the?
Centrioles
-Nuclear envelope disintegrates and nucleus disappears.
-Chromosomes become visible.
Prophase
-Chromosomes are arranged at the equator of the cell.
-Each sister chromatid is attached to the spindle fibers.
Metaphase
