True-breeding is a type of breeding which involves a cross between two parents that are homozygous for a trait leading to the production of offspring from generation to generation that have genotypes that express the same phenotypic traits. The parent plants with purple flowers in the question, are both homozygous for flower color.
1. All living things are made of cells. 2. The purpose of the cell is to organize. 3. Cells are made of organelles 4. Cells are made of proteins. 5. There are many many cells in a living thing.