What Evidence Exists That the Glaucophytes Are One of the Earliest

question 4

Multiple Choice

What evidence exists that the glaucophytes are one of the earliest groups to branch off from eukaryotes following the primary endosymbiosis of a cyanobacterium?

• A) Remnants of the peptidoglycan-containing cell wall of the cyanobacterium can be found between membrane layers of the chloroplast.
• B) Their chloroplasts contain the same pigments as those of early land plants and green algae.
• C) There are three membranes that surround the chloroplast.
• D) The glaucophyte chloroplast has retained some of the DNA and rRNA genes from its cyanobacterial ancestor.
• E) A vestigial nucleus from the cyanobacterial ancestor is present in the chloroplast.

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