Siblings Billy and Sue are brother and sister, but g are not genetic copies of each other. For example, Sue inherited their moth
er's copy of chromosome 13 but their father's copy of chromosome 14, while her brother Billy inherited their father's copy of both chromosomes 13 and 14. This is an example of:
Independent assortment of genes involves the separation of genes during the formation and development of reproductive cells.
A boy has XY chromosome and a lady has XX chromosomes. This explains why Sue inherited the mother's copy of chromosome 13 but their father's copy of chromosome 14 while her brother Billy inherited their father's copy of both chromosomes 13 and 14. He inherited both due to the presence of XY chromosomes.
In many plant cells there is a single large central vacuole filled with liquid, pressure of the central vacuole allows plants to support heavy structures such as leaves and flowers. pro here here :D
