Sequenced elephant genomes
The researchers who conducted the new study suspected a genetic cause and explained that the rare occurrence in men is related to gender, and after sequencing the genomes of elephants with tusks and tusks, the scientists found a genetic difference between the two.
The analysis revealed a pair of candidate genes on the X chromosome, including one known for its role in mammalian tooth development. In humans, these genes are linked to an X-linked dominant syndrome in which the lateral incisors no longer grow. Suspected mutations in one or more genes protect female elephants from poaching, but have fatal consequences for male elephants who do not develop properly in the womb.