Answer:
The answer isn't on there, but humans have estimated 20,000-30,000 genes.
The closest answer in the selection is "Twice as many as A"
Explanation:
The HGP has revealed that there are probably about 20,500 human genes. This ultimate product of the HGP has given the world a resource of detailed information about the structure, organization and function of the complete set of human genes.
Each chromosome contains hundreds to thousands of genes, which carry the instructions for making proteins. Each of the estimated 30,000 genes in the human genome makes an average of three proteins.
