Large-scale gene-deletion analyses reveal that mutations in most eukaryotic genes have little discernable effect. Rarely, pairwise combinations of mutant alleles can be inviable even though the single ...

Cassidy was an updates editor whose main responsibility is to write and edit articles on a range of home improvement topics. Her passion for lifestyle writing began with her editorial apprenticeship ...

CAIRO - Egypt's most famous pharaoh, King Tutankhamun, was a frail boy who suffered from a cleft palate and club foot. He died of complications from a broken leg exacerbated by malaria, and his ...