Which of these organisms, sometimes called
living fossils, is represented by only one
species?
a. horsetails
b. club mosses
c. liverworts
d. ginkgos
e. cycads
D
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Viral gastroenteritis that affects people of all ages and usually lasts less than 3 days is caused by
A. herpes. B. hepatitis B. C. norovirus. D. rotavirus.
Phylogenetic trees are usually constructed using either a distance-based ________ approach, or a characteristic ________ approach.
Fill in the blank(s) with the appropriate word(s).
The use of SNPs for analyzing genomes is based on ____.
A. the nucleotide base pairing in the SNPs B. the types of nucleotides in the SNPs C. differences in SNPs among individuals D. the ratio of purines to pyrimidines in SNPs E. bonding patterns between nucleotides in the SNPs
Organic molecules are more important to microbes than inorganic molecules
Indicate whether the statement is true or false.