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.
C
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Which of the following are proteins that interact directly with antigens during the adaptive immune response?
A) immunoglobins B) major histocompatibility complex C) T cell receptors D) all of these
A group of related bird species has been studied, and has been observed to segregate by size so that larger species generally eat larger food items. This can be explained as an example of
A. competitive exclusion B. amensalism. C. interference competition. D. resource partitioning. E. competitive exclusion and interference competition.
Prokaryotes have ________S ribosomes with ________S and ________S subunits, whereas eukaryotes have ________S ribosomes with ________S and ________S subunits.
A) 80, 50, 30; 100, 60, 40 B) 100, 60, 50; 90, 60, 40 C) 70, 50, 30; 80, 60, 40 D) 70, 40, 30; 80, 50, 30 E) 80, 60, 40; 70, 50, 30
Which connective tissue is best at withstanding compression due the elasticity of its matrix?
a. loose connective tissue b. bone tissue c. cartilage d. fibrous connective tissue e. none of these.