Humans have about ______ genes.

Name: Humans have about ______ genes.
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Question

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Humans have approximately 25,000 genes. While initially it was thought that humans would have around 100,000 genes, advances in sequencing technology have shown that the actual number of protein-coding genes is much smaller than expected. In fact, studies have found that humans have only slightly more genes than the roundworm Caenorhabditis elegans, which has approximately 20,000 genes. Therefore, Option B is the best choice.

Humans Have About ______ Genes