How many genes are estimated to be present in a human cell?

Human cells are estimated to contain approximately 20,000 to 25,000 genes. These genes are segments of DNA that contain the instructions for making proteins, which perform various functions in the body. The actual estimate varies somewhat due to ongoing research and the discovery of new gene functions and relationships, but the widely accepted range firmly places it around 25,000. This understanding is crucial for fields like genetics, medicine, and biotechnology, as it helps scientists comprehend human development, health, and disease at the molecular level.

In contrast, the other options significantly underrepresent the number of genes found in human cells, indicating figures that are too low when compared to current genomic data.