They are genes.
Functional units of heredity are called genes. Genes are segments of DNA that contain instructions for building proteins, which determine an individual's traits and characteristics.
They are genes.
cell
for this reason ceall are called structural and functional units of life
Functional Units
genes
sponges!
It is known as the nephron.
The units of inheritance are 'genes'.
The functional units of the Roman water-carrying system were called aqueducts.
Alveoli
um. the cell body is called the soma. the business end is the terminal
Because they are the lining of the lungs that begin the process of taking oxygen out of the air and into the blood stream. They are the parts that actually coe into contact with the "air" and are therefore called the functional part of the lungs.