Using retroviral vectors for gene therapy might increase the patient's risk of developing cancer because they might _____
A) introduce proteins from the virus
B) not express the genes that were introduced into a patient's cells
C) not integrate their recombinant DNA into the patient's genome
D) integrate recombinant DNA into the genome in ways that misregulate the expression of genes at or near the site of integration
D
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Amniocentesis involves
A) prenatal diagnosis of genetic defects in a fetus. B) tests for enzyme and protein deficiencies in a fetus. C) taking a sample of amniotic fluid with a needle. D) analysis for DNA and chromosome defects in a fetus. E) All of these
The leaf arrangement illustrated in the accompanying figure is:
a. pinnate.
b. alternate.
c. compound.
d. whorled.
e. parallel.
Select the best response to the question. ?What is the best way to prevent contamination when drawing blood cultures?
A) performing hand hygiene prior to the venipuncture B) properly preparing the skin prior to the venipuncture C) wearing gloves when performing the venipuncture D)applying a tourniquet before performing the venipuncture
The F1 generation of the cross purple (PP) x while (pp) flower pea plants should _________.
a. all have white flowers b. all have a light purple or blended appearance c. all have purple flowers d. have 3/4 purple flowers and 1/4 white flowers