Giraffe’s long neck linked to its genetic profile

Influences on embryonic development may explain unusual height, strength of heart

giraffes

GIRAFFE GENES  Giraffes’ long necks and strong hearts may have resulted from changes to genes that control embryonic development. Pictured is a bachelor group of three adult male Masai giraffes in Tanzania.

D. Cavener

Giraffes’ genes tell a not-so-tall tale about growing necks to great lengths.