Question

What evolutionary conclusion is supported by the presence of hind limb remnants in pythons?

Options

• Descent from limbed ancestors

• Independent origin of reptiles without tetrapod ancestry

• Adaptation to an exclusively aquatic lifestyle

• Development of modern flight apparatus

Answer 1

Hind limb remnants (such as internal pelvic elements and small claws) in pythons demonstrate that snakes descended from ancestors that possessed functional limbs.