The figure shows chromosomal separation taking place.The letters stand for genes; capital and lowercase stand for different alleles.The diploid chromosome number in this organism is four.What process is shown? 
Definitions:
Zygomatic
Pertaining to the cheekbone or zygoma, which is a bone that forms part of the orbit of the eye and the cheek.
Temporal
Pertaining to the temporal bone of the skull, near the temples, and involved in hearing and balance.
Parietal
Relating to or attached to the wall of a cavity or body, such as the parietal bones of the skull or the parietal lobe of the brain.
Sphenoid
A complex bone located at the base of the skull between the frontal and temporal bones, contributing to the structure of the eye socket and the cranial floor.
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