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1 Small perennial shrub from tuberous roots, growth characteristics and flower color vary by variety or hybrid. 2  Full sun to part shade. 3  Regular water during growth and bloom (flowers in spring).
. A pea plant with one recessive gene for shortness and one dominant gene for tallness is a hybrid for that trait. A hybrid is called heterozygous, as it has two different alleles. The offspring from a pure tall pea plant, cross-pollinated with a pure short pea plant, will result in a heterozygous plant for tallness.No organism has all dominant or all recessive genes. An organism may be pure in certain traits and hybrid others. A pea plant with one recessive gene for shortness and one dominant gene for tallness is a hybrid for that trait. A hybrid is called heterozygous, as it has two different alleles. The offspring from a pure tall pea plant, cross-pollinated with a pure short pea plant, will result in a heterozygous plant for tallness.