Law of Segregation and Monohybrid cross
In modern terms, the law of Segregation is as follows : Each somatic cell of an individual carries two alleles at any one locus. The alleles of a gene pair segregate (separate) from each other during anaphase I of meiosis, which occurs during the formation of gametes. Half of the gametes carry one allele of a gene pair while the other half carry the other allele (Figure1.6). This law is related to the separation of homolodous chromosomes during anaphase I of meiosis.