Use the table to answer the corresponding question(s)
Species Pairs Percent Divergence in a
Selected DNA Sequence
Human?chimpanzee 1.7
Human?gorilla 1.8
Human?orangutan 3.3
Human?gibbon 4.3
Human?rhesus monkey
(Old World monkey)
7.0
Human?spider monkey
(New World monkey)
10.8
Human?tarsier 24.6Based on the data in Table 18-1, which of the following primates is the most distantly related to
humans?
a. chimpanzee
b. gorilla
c. rhesus monkey
d. gibbon
e. orangutan
C
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A monophyletic group is a group that
A) descended from one ancestor. B) has the same fitness level. C) possesses one taxonomic trait that is the same. D) shares one phylogenetic marker.
As part of their reproductive cycle, helminths produce egg and sperm cells. Both of these eukaryotic cell types have an outer surface composed of polysaccharides known as the ________.
A. microtubule B. cell wall C. glycocalyx D. cyst E. cell membrane
The genus Arthrobacter has a distinctive growth cycle in which branched rod-shaped bacteria are produced in the exponential phase, and cocci are found in stationary phase cultures.
Answer the following statement true (T) or false (F)
A bacterium living in an underground septic tank thrives by absorbing organic compounds from decomposing wastes. What is it?
A) a chemoautotroph B) a chemoheterotroph C) a photoautotroph D) a photoheterotroph