Based on the phylogenetic tree in the figure, which of the following statements is correct?

Based on the phylogenetic tree in Figure 28.2, which of the following statements is correct? (A) The most recent common ancestor of Excavata is older than that of SAR. (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.

1. The statement “the most recent common ancestor of Excavata is older than that of SAR” is incorrect.

2. The statement “the most recent common ancestor of SAR is older than that of Unikonta” is incorrect.

3. The statement “the most basal (first to diverge) eukaryotic supergroup cannot be determined” is correct.

4. The statement “Excavata is the most basal eukaryotic supergroup” is incorrect.

Video Transcript

Let's talk about the periodic file a genetic tree. So the understanding of the evolutionary history of Eukaryotic diversity has been influx, especially in recent years. There are ongoing changes in our understanding of the biology of protests, and this poses Ah lot of challenges. There are a lot of different hypotheses about these relationships, and it's been a focus of scientific activity, which that's the marvelous part about science is our understanding is always always changing. So we know in this tree that there is no the root of the eukaryotic tree is not known. So all for super groups harsh being shown as diverging from one common ancestor. We know this is not correct, but we don't know which supergroup was the first to diverge from the other three. In addition, there have been major new groups of protests that have been discovered in recent years, but their relationship to thes super groups has yet to be resolved

If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Terms in this set (50)

What is thought to be the correct sequence of these events, from earliest to most recent, in the evolution of life on Earth?
1. origin of mitochondria 2. origin of multicellular eukaryotes
3. origin of chloroplasts 4. origin of cyanobacteria
5. origin of fungal-plant symbioses
A) 4, 3, 2, 1, 5 B) 4, 1, 2, 3, 5 C) 4, 1, 3, 2, 5 D) 4, 3, 1, 5, 2 E) 4, 3, 1, 2, 5

Students also viewed

Recommended textbook solutions

Biology

1st EditionKenneth R. Miller, Levine

2,591 solutions

Hole's Human Anatomy and Physiology

15th EditionDavid Shier, Jackie Butler, Ricki Lewis

1,950 solutions

Human Resource Management

15th EditionJohn David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine

249 solutions

Organizational Behavior: Managing People and Organizations

13th EditionJean Phillips, Ricky W. Griffin, Stanley Gully

174 solutions

Which of the following information would be most useful in creating a phylogenetic tree of a taxon?

Which can be concluded from a comparison of the two phylogenetic trees quizlet?

Which of the following statements supports the hypothesis of an endosymbiotic origin of mitochondria?

Which option best describes the concept of an evolutionary tree diagram?