Describe the significance and relationship of the genus and species taxons. If there were not humans
on earth to classify organisms, would species still exist? What will be an ideal response?
Species are nested in the broader taxon of genus. Species on earth do not require humans for their
classification or their existence.
Concepts to Consider: Taxonomy is based on evolutionary relationships; the genus and species
taxons allow scientists to identify specific organisms. The genus is always capitalized and the species
is written in lower case. Both taxons are italicized. The genus may be abbreviated using only the first
letter, but the species is always written out. An organism must be identified using both the genus and
species taxons because some organisms have the same species name. Using the scientific
nomenclature rather than the common name of an organism allows all scientists to recognize and work
with the same organism. Species would exist whether we are here to name them or not; other taxa are
also based on evolutionary ties, at least by cladists and systematists using the classic evolutionary
approach
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When fishery effort increases and catch remains stable or decreases
a. fishers need to find alternative methods to catch fish. b. fishers simply need to relocate to another patch. c. the abundance of the fish is declining. d. costs remain high. e. the size of fish caught tends to increase.
What information cannot be determined from the DNA sequence of a cDNA clone?
A) exon sequences B) sequence of the promoter C) similarity to previously identified sequences D) amino acid sequence of the encoded polypeptides E) sequence of the spliced mRNA transcript
An unidentified arthropod with no antennae
and eight legs could be closely related to a. grasshoppers. b. ticks. c. crayfish. d. millipedes. e. crabs.
The most shallow soils occur in or on
A) steep slopes. B) native grasslands. C) valleys. D) floodplains.