All mammals, including giraffes, have 7 cervical (neck) vertebrae. Giraffes have a longer neck than other mammals because during their development, the cervical vertebrae grow for longer than in other mammals and thus become larger. The difference in neck length between giraffes and other mammals is thus attributed to Question 13 options: heterochrony analogy allopatric speciation convergent evolution exaptation heterochrony analogy allopatric speciation convergent evolution exaptation.

1. All mammals, including giraffes, have 7 cervical (neck) vertebrae. Giraffes have a longer neck than
other mammals because during their development, the cervical vertebrae grow for longer than in
other mammals and thus become larger. The difference in neck length between giraffes and other
mammals is thus attributed to
Question 13 options:
heterochrony
analogy
allopatric speciation
convergent evolution
exaptation
heterochrony
analogy
allopatric speciation
convergent evolution
exaptation