During embryological development, the mouse limb and pig limb start out similarly, exhibiting elements of vertebrate limb structure. As development continues, the pig limb changes to lose digital differentiation, resulting in fewer defined digits compared to the mouse limb. These changes in the pig’s limb help it adapt to a more robust structure suited for running and supporting its weight in a terrestrial environment. The mouse’s limb develops differently because it does not need to support as much body mass, allowing for greater agility and precision in movement.
Use your observations in the previous questions and Figure 3 to correctly complete the sentence. These sentences explain how the pig’s limb develops differently from the mouse’s limb and how these changes helped pigs adapt over time.
(4 points)
During embryological development, the mouse limb and pig limb start out
.
As development continues, the pig limb changes to lose
digits compared to the mouse limb.
These changes in the pig’s limb help it adapt to
.
The mouse’s limb develops differently because it does not need to
1 answer