For a mutation to affect the evolution of an animal species, it must occur within
A) somatic cells. B) diploid cells. C) prokaryotic cells. D) gametes.
D
Biology & Microbiology
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A terrestrial mollusc without a shell belongs to which clade?
A) chitons B) bivalves C) gastropods D) cephalopods
Biology & Microbiology
Most mollusks have a closed circulatory system in which hemolymph is confined within the walls of hearts and
vessels.
a. True b. False
Biology & Microbiology
Duplicated chromosomes linked together at their
centromeres at the beginning of meiosis are appropriately called what kind of chromatids? a. mother b. daughter c. sister d. homologous e. haploid
Biology & Microbiology
Most peptic ulcers are the result of colonization of the stomach by
A) Vibrio cholerae. B) Escherichia coli O157:H7. C) Shigella dysenteriae. D) Salmonella enterica. E) Helicobacter pylori.
Biology & Microbiology