Page 47 - Biology - XII
P. 47
Chromomeres Homologous chromosomes
Nucleolus
Chromomeres with
Centriole
beaded appearance
Chromomere
Nuclear membrane Nucleolus
Dyad
Leptotene Zygotene
Chromomere Crossing over between homologous chromosomes
Tetrads
Chiasma
Centromere
Tetrad Tetrad
Pachytene Diplotene
Tetrads Centromere
Equator
Spindle
Diakinesis Metaphase - I
Anaphase - I Telophase - I
Telophase - II
(2 Daughter cells)
Prophase - II Metaphase - II Anaphase - II
Telophase - II
(2 Daughter cells)
= 4 Daughter cells
Prophase - II Metaphase - II Anaphase - II
Fig. 8.4: Stages of meiotic cell division in animal cells (A single cell is focused)
46
