The following are pieces of DNA from several dinosaurs as well as a piece of the

Question

The following are pieces of DNA from several dinosaurs as well as a piece of the dinosaur "ancestor". Assume that DNA follows a molecular clock. Dinosaur ancestor DNA: TTTCTTATTGTTGGG Zephyrosaurus DNA: TTACTTACCGTTAGG Albertosaurus DNA: AAAGTTGTTGTTAAA Seismosaurus DNA: TTTGTTGTTGTTAAA Dryosaurus DNA: TTTCTTAGGGTTGGG (a) Which dinosaur is the closest ancestor to the dinosaur ancestor? (b) Which dinosaur is the most distant ancestor to the dinosaur ancestor? (c) Excluding the dinosaur ancestor, which are the two (2) most closely related dinosaurs?

Explanation / Answer

1. Dryosaurus DNA is ancestor of dinosaurs DNA.
2. Albertosauras is distant ancestor of the dinasouras DNA.
3. Seismosauras and Dryosaurus. are closely related.

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