By Maddie Bryan
What Is Genetic Variation?
Genetic variation is the crossing over of alleles in genes. Variation is complete when the tetrads have crossed over and are now fully attatched to the other chromitid. Genetic variation determines your eye color, hair color, etc.
examples of genetic variation
Sections of the chromitids break of and reattach to the chromatid.
This is when the cell divides. which reduces the chromosome number by one-half.
The fusion of a sperm and an egg to form a zygote.