#Question id: 8682
#SCPH06 I Botany
Giardia intestinalis can cause disease in several different mammalian species, including humans. Giardia organisms (G. intestinalis) that infect humans are similar morphologically to those that infect other mammals, thus they have been considered a single species. However, G. intestinalis has been divided into different subgroups based on their host and a few other characteristics. In 1999, a DNA sequence comparison study tested the hypothesis that these subgroups actually constitute different species. The following phylogenetic tree was constructed from the sequence comparison of rRNA from several subgroups of G. intestinalis and a few other morphologically distinct species of Giardia. The researchers concluded that the subgroups of Giardia are sufficiently different from one another genetically that they could be considered different species
Which of the following changes would a modern systematist be most likely to make after learning of the results of the rRNA analyses?
#Question id: 9149
#SCPH28 | Zoology
In creating global climate patterns, which of the following factors is the primary cause of all of the other factors that are listed?
#Question id: 27821
#Research Methodology
What is the primary advantage of using quantitative research?
#Question id: 3670
#SCPH05 I Biotechnology
The best-known examples of host-encoded site-specific recombination systems used to resolve plasmid dimers are the cer-XerCD site-specific recombination systems used by the
#Question id: 5082
#SCPH06 I Botany
In which of the following organisms does holoblastic cleavage typically occur?
I) sea urchins
II) humans
III) birds
IV) fish