Question

Some horse ancestors had limb characteristics that were similar to what we see in the modern horse. Which of the following best describes the evolution of horse limbs over time?

Over time, horse limb got longer

Over time, the horse limb became shorter.

Answer 1

Over time, horse limbs got longer and more specialized for running and grazing, with adaptations such as the elongation of the middle digit to form a single hoof and the reduction of the lateral digits.