The base of a pyramid of energy represents the
a. primary producers.
b. decomposers.
c. primary consumers.
d. secondary consumers.
e. primary carnivores.
Answer: a
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How could overlapping genes in a positive ssDNA virus genome be predicted?
A) Convert the positive ssDNA into its complementary ssDNA and search for genes in the negative ssDNA strand for sequences used in more than one predicted gene. B) Directly search the three frames of the positive ssDNA for genes that have sequences where more than one gene is predicted. C) Convert the positive ssDNA into negative ssDNA and search all six possible frames for genes that use part of the same sequence. D) Convert the positive ssDNA into its complementary ssDNA and search for genes in the negative ssDNA strand that also share a complementary gene in the positive strand.
Assuming complete dominance, a 3:1 phenotypic ratio is expected from a monohybrid sib or self-cross
Indicate whether the statement is true or false
Skin is able to prevent most microorganisms from entering the body by
A) producing alkaline secretions. B) having keratin in the uppermost layer. C) production of antibodies. D) the adhesion junction in the skin preventing bacteria from entering. E) releasing macrophages on the skin surface.
Most bony fishes have a hard plate that covers the gills on each side of the head called the
A. pharyngeal slits. B. radula. C. gill arches. D. operculum. E. lateral lines.