Excavata - Alchetron, The Free Social Encyclopedia

SOLVED: How do we know that excavata once had mitochondria but lost them?They still have mitochondria.They have homologs to proteobacterial genes in their nuclear DNA.They have homologs to proteobacterial genes in their chloroplast DNA.They have hydrogenosomes with single membranes.Question 42 ptsMany of the following statements are true with regards to Amphioxus. Which one is false?Amphioxus is related to the extinct organisms Pikaia.Amphioxus has simple sensory systems including primitive eyes

SOLVED:Based on the phylogenetic tree in Figure 28.5, which of the following statements is correct? (A) Excavata and SAR form a sister group. (B) The most recent common ancestor of SAR is older than that of Unikonta. (C) The most basal (first to diverge) eukaryotic supergroup cannot be determined. (D) Excavata is the most basal eukaryotic supergroup.