In the context of biodiversity, genetic diversity consists of
A. all the alleles and transcription factors within a species
B. the amount of genetic variation that occurs within and between populations
C. the amount of genetic variation that occurs in an individual
D. the amount of genetic variation that occurs between species
E. the amount of genetic variation that occurs within and between species
B. the amount of genetic variation that occurs within and between populations
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The natural habitat of Mycoplasma spp., which causes infectious disease in humans, can best be described as the:
a. mucous membranes of humans. b. aquatic environment. c. natural environment. d. genitourinary tract of animals.
A clade includes which of the following?
A. an ancestor and all its descendant species, and taxa with shared derived characters B. an ingroup only C. an outgroup and an ingroup D. a common ancestor and all its descendant species E. one taxon with shared derived characters
Suppose you are trying to estimate the following regression: Yi = ?0 + ?1X1i + ?2X2i + ?3X3i + Ui, with an instrument for Zi for X2i. All of the following variables will be included (on the right- and left-hand side of this regression) in the first stage of two-stage least squares except for which one?
A. Yi B. X2i C. X1i D. X3i
Many amphibian populations have been decimated by a parasitic fungus classified as a member of the _____
A) Chytridiomycota B) Ascomycota C) Basidiomycota D) Zygomycota E) Glomeromycota