Following geological time period and major evolutionary event?

I. Devonian                            A. Gymnosperms dominant

II. Jurassic                               B. Amphibians diversify; first reptiles

III. Carboniferous                  C. Mammals appear

IV. Triassic                           D. Seed plants appear

#Question id: 18965

#SCPH01 Biochemistry

#Question id: 969

#SCPH28 | Zoology

In mammals, most amino acids undergo deamination in the ________.

#Question id: 14154

#SCPH01 Biochemistry

#Question id: 9277

#SCPH05 I Biotechnology

The light energy absorbed by the carotenoids is transferred to chlorophyll for photosynthesis; because of this role they are called

#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?