Question

During an archaeological dig in North America, a student finds a fossil of a marine organism. Like most old fossils, the tissue and shell of the organism has been replaced by quartz and calcium rock. The fossil appears to be very similar to one discovered years before in Africa. The archeological student tells his research advisor that he plans to compare the genomes of these fossilized creatures to identify how long ago they had a common ancestor and then look for their ancestor in rocks of that age. What faulty reasoning will the advisor most likely point out in the student's plans?

Answer 1

The genomes will have suffered mutations after the organisms died due to environmental factors, so they will yield incorrect ages.

The rock that makes up the fossils replaced the organisms' tissue and genetic material, so their genomes can't be extracted.

The fossils are on two different continents, so finding the location that would contain a common ancestor would be difficult.

The ancient marine organisms most likely lack a common ancestor that will be shallow enough in the ocean to be reached.

Answer 2

its 2

Answer 3

thanks :)