Question

Which observations are examples of homologies? Select ALL of the correct answers. 1.The pharyngeal arches found in all vertebrate embryos develop into gill supports in fish and throat structures in mammals. 2. The ability to fly using elongated wings developed independently in the lineages that led to birds, pterosaurs, and bats. 3. The skin flaps for gliding that evolved separately in sugar gliders and flying squirrels help them use similar habitat niches. 4. The Pax6 gene in vertebrates and the eyeless gene in flies have similar sequences, and both regulate embryonic eye development. 5. The bones that support the wings of birds, pterosaurs, and bats are arranged in the same order in each animal.

          Which observations are examples of homologies? Select ALL
of the correct answers.
1.The pharyngeal arches found in all vertebrate embryos develop
into gill supports in fish and throat structures
in mammals.
2. The ability to fly using elongated wings developed
independently in the lineages that led to birds, pterosaurs,
and bats.
3. The skin flaps for gliding that evolved separately in sugar
gliders and flying squirrels help them use similar
habitat niches.
4. The Pax6 gene in vertebrates and
the eyeless gene in flies have similar
sequences, and both regulate embryonic eye development.
5. The bones that support the wings of birds, pterosaurs, and
bats are arranged in the same order in each animal.

Added by Laurie L.

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