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Example sentences for: giardia
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However, in the compacted genome of Giardia [ 11 12 ] ., the N-terminal domain is greatly truncated and consists of only about 25 residues.
The RDRP is present in one or more copies in a wide range of eukaryotes, from early-branching parabasalids, such as Giardia , to multicellular forms, including fungi, plants and animals [ 57 58 ] . This broad representation in eukaryotes, including organisms that are considered primitive, suggests that RDRP might have been encoded in the genome of the common ancestor of all modern eukaryotes.
However, because Giardia arose at an early time (Table 1) and branches near the base of the eukaryote phylogeny, the simplest explanation is that it never possessed mitochondria and is a primary (not secondary) amitochondriate.
Our time estimate for the divergence of an early-branching eukaryote ( Giardia ) that lacks mitochondria, 2.2 Ga, suggests that it is a primary and not secondary amitochondriate organism.
Although the position of Giardia in some protein phylogenies [ 30 ] has been proposed as evidence that it is a secondary amitochondriate, others have urged caution until additional, more conclusive, data become available [ 6 ] .
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