Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
4 Cards in this Set
- Front
- Back
Prophase 1:
-Chromosomes coil up and a a spidle forms -Homologous chromosomes come together matched gene by gene forming a tetrad -crossing over may occur when chromtides exchange genetic materal -this occurs two or three times per pair of homologous chromosomes |
Metaphase 1:
-the centromere of each chromosome becomes attached a the spindle fiber -the spindle fibers pull the tetrads to the equator of the spindle -homologous chromosome are lined up side by side as tetrads |
|
Anaphase 1:
-homologous chromosome separate and move to oppossite ends of the cell - this ensures that each new cell will receive only one chromosome from each homologous pair |
Telophase 1:
-The spindle breaks down and the chromosomes uncoil -the cytoplasm divides to yield tow new cells -each cell has half the genetic information of the orginal cell beacuse it only has one hom logous chromosomes from each pair |
|
Prophase 11:
-a spindle forms in each of the two new cells and the fibers attach to the chromosomes |
Metaphase 11:
-the chromsomes are pulled to the centerof the celland lined up randomly at the equator |
|
Anaphase 11:
-the centromere of each chromosome splits -the sister chromatids separate and move to oppsite poles |
Telophase 11:
-Nuclei re-form -the spindles breack down -the cytoplasm divides -identical to mitosis |
