Please please please please help me with these questions I have left it’s due 12 please help

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? the wings are analogous structures that evolved differently and do not have a similar internal structure. the wings are homologous structures that evolved differently and do not have a similar internal structure. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. wings of bats are vestigial structures, but the wing structures of birds are not vestigial.

Dna is colied into chromosomes in a cell

Researchers want to use edna to look for an invasive species in the water which of the steps would be likely do last