Use the Hardy-Weinberg equations: p + q = 1 and p2 + 2pq + q2 = 1. If the dominant allele frequency is 0.8, what percentage of the population will be heterozygous?
A. 16%
B. 4%
C. 20%
D. 32%
Answer: D. 32%
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In the ZW system of sex determination (as in birds), a male is _____________ while a female is ______________
A. ZZ : ZW B. ZW : ZZ C. Z0 : ZW D. Z : ZW
The first human gene therapy was approved for patients suffering ADA (adenosine deaminase) deficiency. In this therapy, lymphocytes were removed from the patient, the normal ADA gene was put into the cells, and the cells were returned to the bloodstream. How was the normal ADA put into the lymphocytes?
A. Via the polymerase chain reaction. B. By fusing normal lymphocytes with deficient lymphocytes. C. Microinjection. D. Via a plasmid vector. E. Via a viral vector.
In the figure above, the viral DNA in the lysogenic pathway ____
is no longer present
a. has been destroyed by host bacterial enzymes b. is integrated into the bacterial chromosome c. has been copied and changed into bacterial DNA d. is no longer present
e. has been transcribed into RNAA(n) ________ vector is a plasmid that can be replicated in several different organisms because it has at least one origin of replication that will function in each host.
A. expression B. chimeric C. phage D. shuttle