The unique feature of HeLa cells that make
them important for research is that
a. they are identical to all other human cells.
b. they are immortal cells and will grow in
culture.
c. they are limited in growth cycles.
d. they are like stem cells.
e. all of these make them important
B
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Two populations that have been separated from each other for a long period of time with show
A. increased differences between the two populations in genetic sequences. B. decreased differences between the two populations in genetic sequences. C. no differences in genetic sequences. D. no similar genetic sequences. E. differences in the rate of mutation.
A 30× objective and a 20× ocular produce a total magnification of
A. 50×. B. 600×. C. 230×. D. 320×.
As geographically isolated human subpopulations became adapted to different environments over time, different phenotypes resulted, causing the evolution of various human ________
Fill in the blank(s) with correct word
If the tubes were not sealed properly and the Methylene Blue Reductase test was performed, how would the test be biased?
A) Samples would reach the endpoint of the reaction in a shorter time B) Samples would reach the endpoint of the reaction in a longer time