Used blood leaves the breasts through the veins and is pumped back to the heart and lungs to be refreshed. Lymph must also be refreshed and recycled. Lymph drains away from your breasts through the lymphatic system, which is made up of lymphatic channels and lymph nodes.
exists and is an alternate of . Chromosomes are located in the nucleus of a cell in eukaryotes. In prokaryotes (which lack a cell nucleus) chromosomes are circular in shape usually found attached to the plasmid membrane. Smaller circular DNA known as plasmids are also found in the prokaryotic cells and are thought of as smaller versions of chromosomes.
genes located on sex chromosomes are called sex-linked genes. In humans, there are two types of sex chromosomes: X and Y chromosomes. Genes located on the X chromosome are c â¦ alled X-linked and genes located on the Y chromosome are called Y-linked chromosomes.4 people found this useful. Bonnie Peregrine.n humans, there are two types of sex chromosomes: X and Y chromosomes. Genes located on the X chromosome are c â¦ alled X-linked and genes located on the Y chromosome are called Y-linked chromosomes. 4 people found this useful.