Meiosis Flashcards
What is the product of meiosis?
-4 genetically different haploid cells.
What is meiosis used for?
Produces gametes for sexual reproduction and results in variation.
What happen in meiosis 1?
-First divisor of nucleus.
-Diploid number of chromosomes is halved and homologues pairs of chromosomes separates.
What happens in meiosis 2?
Second division of nucleus and sister chromosomes are separated.
What happens in each stage of meiosis 1?
Prophase1- Crossing over of homologous chromosomes, nuclear envelope disintegrates, chromosomes condense.
Metaphase1 - chromosomes meet at equator of cell.
Anaphase1- chromones pulled to opposite poles of cell by spindles.
Telophase1- nuclear membrane reforms, chromones uncoil and recondense.