Chromosomes are coiled structures made of DNA and proteins, and genes are carried on the chromosomes. Given these facts, where are genes carried among the following options:
- the environment
 - Most plants
 - plant reproduction
 - Veins and arteries.
 - Earth orbiting the Sun
 - the body's largest organ
 - Leeuwenhoek
 - coiled structures


 

        coiled structures 