The Phases of Meiosis Flashcards
chromosomes coil up and spindle the fibers form
Prophase I
Homologous chromosomes come together forming a tetrad
Prophase I
Crossing Over may occur when chromatids exchange genetic material resulting in new combinations of alleles on chromosomes
Prophase I
The centromere of each chromosome becomes attached to a spindle fiber
Metaphase I
The spindle fibers pull the tetards to the equator of the spindle
Metaphase I
Homologous chromosomes separate and Mocs to opposite ends of the cell
Anaphase I
Centromeres do not split-this ensures that each new cell will receive only one chromosome from each homologous pair
Anaphase I
The spindle breaks down and the chromosome uncoil
Telophase I
The cytoplasm divides to yield two new cells
Telophase I
Each cell has half the genetic information of the original cell because it has only one homologous chromosome from each pair
Telophase I
Chromosomes coil up and spindle fibers form
Prophase II
Nucleoli and nuclear envelope disappear
Prophase II
The chromosomes (each consisting of 2 chromatids) line up along the equator
Metaphase II
The centromere of each chromosome splits
Anaphase II
The sister chromatids separate and move to opposite poles
Anaphase II
Nuclei reforms
Telophase II
The spindle break down and the chromosomes uncoil
Telophase II
The cytoplasm divides to yield four haploid sex cells
Telophase II
The cell replicates it’s chromosomes each chromosome and has two sister chromatids held together by a centromere.
Interphase
