The table below shows the fossils found in various layers of an undisturbed rock: Fossils In Rock LayersLayer (from top)Fossil in Layer1A, C2E3A, D, F4B5F, C6D, B Which is most likely an index fossil?​

Diagram of the evolution of land plants?

If the rna molecule in a human has the nucleotide sequence of guu, this would the amino acid valine would be needed to make the protein. how would this cha process was occurring in a mushroom?

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population. b) the separated population is small, and genetic drift occurs. c) the isolated population is exposed to different selection pressures than the ancestral population. d) different mutations begin to distinguish the gene pools of the separated populations. e) gene flow between the two populations is extensive.