Phenotype:
An organisms appearance is known as its phenotype. In pea plants possible phenotypes for the characteristics of flower color would be purple flowers or white. For seed color, yellow and green seeds are the different phenotypes.
Genotype:
Both inherited alleles together form an organisms genotype. Because the allele for purple flowers (P) is dominant, only one P allele is neede for the plant to have purple flowers. A plant with two recessive alleles is said to be homozygous. A plant that has the genotype Pp is said to be heterozygous.