Functions of radius and ulna

what are the functions of radius and ulna bones ​

The radius' primary role is to provide supination and pronation by articulating with the ulna and humerus at the elbow. The lunate and scaphoid should then articulate to enable complete wrist motions.

Explanation:

They together help in rotation of the wrist.

gametes or germ cells are haploid cells (example: sperm and ova) containing only one set (or n) number of chromosomes and autosomal or somatic cells are diploid cells containing 2n number of chromosomes.