A bacterial cell must have ________ in order to transfer portions of its chromosome to another cell.
A. growth enhancement genes
B. an F factor
C. a high frequency of combination plasmid
D. a recombination factor
E. All of the answers are correct.
Answer: B
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A graduate student cloned the gene for the cystic fibrosis transmembrane conductance regulator into a human artificial chromosome. However, after a few cell divisions, the artificial chromosome was no longer present in the host cells
He analyzed his initial construct and found the ends of the artificial chromosome were unstable. If he were to "correct" his construct, it would be best to add the following sequence: A. (TTAGGG)n B. (ATTATT)n C. (AT)n D. (GC)n
In a hydrangea plant, the color blue (B) is dominant to the color white (b). What is the probability that offspring will be blue?
a. 75% b. 50% c. 25% d. 100%
Human B lymphocytes mature in an intestinal region called the bursa.
Answer the following statement true (T) or false (F)
What would happen if an embryo failed to secrete HCG?
A) The maternal elements of the placenta would fail to develop. B) The fetal elements of the placenta would fail to develop. C) Neural tube formation would not occur, and the embryo would not have a brain. D) The embryo would be aborted.