What does this finding suggest
Which patient has primary hypercortisolism
August 4, 2017Solution-Explain the relationship between chromosomes and
August 4, 2017The protostome developmental sequence arose just once in evolutionary history, resulting in two main subgroups-Lophotrochozoa and Ecdysozoa. What does this finding suggest?
1) The protostomes are a polyphyletic group.
2) Division of these two groups occurred after the protostome developmental sequence appeared.
3) These two subgroups have a common ancestor that was a deuterostome.
4) The lophotrochozoans are monophyletic.
