Allele for white iii) Genotype vs Phenotype (1) Genotype (a) PP= homozygous for purple (b) pp= homozygous for white (c) Pp= heterozygous for flower color (2) Phenotype (a) PP= purple (b) Pp= purple (c) pP= Purple (d) pp= white c) How are single traits inherited? I) Genes on Homologous chromosomes (1) Parent 1 AA (2) Parent 2 Aa | P p |P PP Pp |p Pp pp Genotype PP pP Pp pp Frequencies 1 2 1 Phenotype purple White Frequencies 3(75%) 1(25%) d) How is sex determined, and how are sex-linked genes inherited?