The picture above shows a phylogenetic tree for cytochrome c oxidase (subunit 1)

Question

The picture above shows a phylogenetic tree for cytochrome c oxidase (subunit 1) in target organisms and organells. Please refer to it in answering the questions below:

Q1) According to phylogeny tree for the protein, which organism is more closely related to the photosynthetic bacterium?

a. Corynebacterium glutamicum

b. Balaenoptera musculus

Q2) In blue whales (and other mammals), the protein is found in which organelle?

A. Golgi Apparatus

B. Endoplasmic Reticulum

C. Nucleus

D. Mitochondria

Q3) According to endosymbiotic theory, the mitochondria of eukaryotes (such as a blue whale) are closely related to which of the following types of organisms?

A. a photosynthetic bacterium

B. a non-photosynthetic bacterium

Q4) In consideration of the endosymbiotic theory, which of the following statements best describes the phylogeny tree of cytochrome c oxidase?

a. The phylogeny tree indicates that the domains of life are incorrect.

b. The phylogeny tree indicates that bacteria are very diverse and should be reorganized to better reflect the similarity to eukaryotes.

c. The phylogeny tree indicates that cytochrome c oxidase (subunit 1) from a photosynthetic bacterium is closely related to cytochrome c oxidase (subunit 1) from the mitochondria of blue whales.

d. The phylogeny tree indicates that cytochrome c oxidase (subunit 1) from a photosynthetic bacterium is closely related to cytochrome c oxidase (subunit 1) from a non-photosynthetic bacterium.

Q5) Does the phylogenetic tree support the Endosymbiotic Theory?

A. Yes

B. No

Q6) According to your phylogenetic tree, all of the organisms are connected through a common ancestor.

A. True

B. False

Reset Tree Phylogenetic Tree View Cobalt RID 6ENB967A21S Max Seq Difference 0.85 T S Number of Seqs 6 Collapse Mode Show All Tree method Distance Sequence Label Fast Minimum Evolution l Grishin (protein) Mouse over an internal node for a subtree or alignment. Click on tree label to select sequence to download Hide legend Tools Upload ? UploadBlast names color map high GC Gram+ a-proteobacteria whales & dolphins even-toed ungulates primates Corynebacterium glutamicum(dbj|BAB64406.1) Rhodobacter sphaeroides KD 1 3 1 (gbACM00048. 1 ) #8alaenoptera musculus ref|NP 007058.1) Bos taurus(gblAHI51987.1) Homo sapiens(gblAGW803 34·1 ) 08 ·Gorilla gorilla (refl NP-0082 14. 1 )

Explanation / Answer

Q1). a. Corynebacterium glutamicum

According to the phylogeny tree for the protein, corynebacterium glutamicum is more closely related to the photosynthetic bacterium, whereas balaenoptera musculus is distantly related.

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