Provides protection and support
Answer:
cell wall
Explanation:
The cell wall is the protective, semi-permeable outer layer of a plant cell
Most organisms are Diploid, and as a result, they will have received 2 copies of the chromosomes, or sets of chromosomes, from both their parents. This they will have 2 sets of Genes that will perform almost exact same process, except with different phenotypes.
These chromosomes need to be homologous, in order for new alleles and other genetic combinations to be made.
25% will have bb when crossing u have 1 BB 2 Bb 1 bb