A recount of human genes ups the number to at least 46,831
The new estimate is based on a broader definition of just what a gene is

COUNTING ON IT The number of human genes depends on how scientists define a gene.
Svisio/iStockphoto
The new estimate is based on a broader definition of just what a gene is
COUNTING ON IT The number of human genes depends on how scientists define a gene.
Svisio/iStockphoto