Segments of eukaryotic DNA that can move or be copied from one site to another in the genome are called
A) exons.
B) plasmids.
C) transposable elements.
D) vectors.
Answer: C
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Map distance is the number of recombinant offspring divided by the total number of nonrecombinant offspring
Indicate whether the statement is true or false
In an acidic solution, the concentration of hydrogen ions is _________ hydroxide ions.
a. less than b. greater than c. equal to d. cannot be determined
The type of reproductive isolation exhibited by 13-
year and 17-year cicadas is a. spatial. b. behavioral. c. mechanical. d. temporal. e. ecological.
As a botanist working for a field museum, you spend many hours in the field looking for new species. On a recent trip you may have discovered a new plant species. The plant is very short, and has a stem but no roots or leaves. The stem forks and has branches that have sporangia on the tips. Further analysis reveals vascular tissue. What type of plant might you have discovered?
A. Angiosperm B. Gingko C. Rhyniophyte D. Bryophyte E. Gymnosperm