Question

move the correct answer in the box provided. early - stage observation late - stage changes implications for vertebrate evolution gill pouches are present and visible in all vertebrate embryos. in fish, these pouches develop into gills. in land animals, they disappear as the embryo grows. the observation of gill pouches suggests that vertebrates form gill pouches only when living in water keep their gill pouches throughout life have shared origin but adapt differently develop the same structures in all species

Explanation:

The presence of gill - pouches in all vertebrate embryos and their different fates (forming gills in fish and disappearing in land animals) implies a shared evolutionary origin with different adaptations.

Answer:

have shared origin but adapt differently