All of the following are true of gene therapy except
a. gene therapy could be used to treat inherited disorders.
b. viruses are used to deliver genes to target cells.
c. cystic fibrosis has been successfully treated by gene therapy.
d. gene addition incorporates an additional gene into target cells.
e. gene correction corrects the gene mutation in the target cells.
C
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Which of the following is NOT characteristic of water-soluble hormones?
A) intracellular receptors B) free in plasma C) act through second messengers D) short half-life in blood
Being a carrier of the sickle cell trait, although generally not a serious problem, can pose significant risks for athletes, particularly those in intense training regimens
The death of Florida State University linebacker Devaughn Darling, a carrier of the sickle cell trait, in a spring conditioning drill refocused attention on sickle cell abnormalities, including both sickle cell disease and sickle cell trait (carriers). High altitude, aggressive exercise, and high temperatures can all lead to acute rhabdomyolysis in individuals with sickle cell trait. Why do you think an individual who is a carrier of the sickle cell trait may be more likely to experience the symptoms of SCD during rigorous exercise?
Bacterial crusts contain bacteria that primarily supply ____ to other plants?
Fill in the blank(s) with the appropriate word(s).
DNA rearrangements in eukaryotes can
A) cause chromosome puffs. B) enhance production of the certain gene products. C) increase the diversity of possible gene products from a limited number of genes. D) allow for epigenetic regulation. E) enhance production of the certain gene products and increase the diversity of possible gene products from a limited number of genes.