A study revealed differences in DNA methylation patterns between monozygotic twins, only one of whom was
affected by a schizophrenia or bipolar disorder. This suggests a role for ____ in mental illness. Fill in the blank(s) with the appropriate word(s).
epigenetics
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The main difference between germ-line gene therapy and somatic gene therapy is
a. only somatic gene therapy can result in the modified genes being passed to the next generation. b. only germ-line gene therapy will have results limited to the current generation. c. in germ-line gene therapy, the gametes are altered; in somatic gene therapy, that doesn't happen. d. in somatic gene therapy, the gametes are altered; in germ-line gene therapy, only the body cells are altered. e. only germ-line gene therapy is ethical for research purposes in rodents.
What happens to plasma proteins in
capillaries?
a. they are forced into interstitial fluid by the blood pressure b. they diffuse passively into the interstitial fluid c. they remain in the capillaries and do not enter into the interstitial fluid d. they breakup into their components and the components diffuse into the interstitial fluid e. they are actively carried into the interstitial fluid
The __________ is shorter in females than it is in males, which explains the greater likelihood of
developing bladder infections in __________. a. ureter; females b. ureter; males c. renal papilla; females d. urethra; males e. urethra; females
The genetic code is
A) a set of two base sequences coding for each amino acid. B) used during the translation of DNA to mRNA. C) read in sets of three bases called codons. D) different in different organisms.