A visual display of metaphase chromosomes arranged by size, shape, and banding pattern is ______.
a. a centrosome
b. a genetic disorder
c. amniocentesis
d. a karyotype
Answer: d. a karyotype
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Researcher discovers a new unicellular organism that contains a single circular chromosome and no membrane-bound organelles. Upon closer observation, the researcher notices that this organism can also fix nitrogen and produce methane
How should this organism be classified? A. as a bacterium B. as an archaeon C. as a eukaryote
In humans, helminths generally infect the ________.
A. nervous system B. urinary tract C. gastrointestinal tract D. skin E. muscular system
Which event may occur in all viruses,
prokaryotes, and eukaryotes? a. duplication b. aneuploidy c. translocation d. mutation e. none of these
All EXCEPT which of the following are monocots?
a. orchids b. wheat c. maple d. grass e. palms