AP BIOLOGY

Detailed explanation-1: -Fossils, anatomy, embryos, and DNA sequences provide corroborative lines of evidence about common ancestry, with more closely related organisms having more characteristics in common. DNA underlies the similarities and differences in fossils, anatomy, and embryos.

Detailed explanation-2: -All known life forms trace back to a last universal common ancestor (LUCA) that witnessed the onset of Darwinian evolution. One can ask questions about LUCA in various ways, the most common way being to look for traits that are common to all cells, like ribosomes or the genetic code.

Detailed explanation-3: -Evidence for common ancestry can be found in the fossil record, from comparative anatomy and embryology, from the similarities of cellular processes and structures, and from comparisons of DNA sequences between species.

Detailed explanation-4: -If you and one of your DNA matches has the same ancestor in your trees, we show you that person as a common ancestor. When a match has a common ancestor, you’ll see it listed.