Why is mendel's law of independent assortment not always valid for two or more phenotypical traits of an individual?

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.

Which blood cell spend most of their time in the lymphatic system?

What is the name of the type of cell division that occurs in the prokaryotic cell cycle