Meiosis Flashcards
Reduction division happen in which cells ?
Germs cells
In meiosis the cell give 4 genetically different daughter cells each cell contain _____ number of chromosomes
Heploid
What are the 5 stages of prophase 1
- leptoten
- zygotene
- pachytene
- diplotene
- diakinesis
Chromosomes are surrounded by nucleus , it is thin and long
كلام زيادة each Chromosomes composed of two Cromartids joind at the centromere
Leptotene
What is the process of synaptonemal complex and in which phase does it occur?
Approximation of 2 homologous chromosomes one from paternal and other from maternal
When crossing over occur?
Pachytene
How many chromosomes does cell have in the end of meiosis?
23 d-chromosomes
When synaptonemal complex dissolve ?
Diplotene
Crossing over occur between 2 s-chromosomes
T/F
False
Between homologous chromosomes
What occur in diakinesis?
Nuclear membrane and nucleolus disappear
Which phase miosis 2 doesn’t pass through it and why?
S phase because
Chromosomes were already replicated
Why the 4 daughter cells result from meiosis are genetically different?
Due to crossing over
