One of the limitations of the process of transfection is
a. it can only be used in retroviruses.
b. it can only be used in DNA-containing viruses.
c. it can only be used with genes that are expressed in the tissues into which the new DNA
will be inserted.
d. it can only be used in icosahedron-shaped viruses.
e. it can only be used in hexagonally-shaped viruses.
C
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Cryptic female choice is a type of intersexual selection where
A. the female genital tract selects for sperm that tend to be unrelated to the female. B. the egg itself has mechanisms to prevent fertilization by genetically related sperm. C. pollen from unrelated plants is not able to fertilize an egg. D. the female genital tract and/or the egg itself prevents fertilization by genetically related sperm. E. the female chooses which male can mate with her based on cryptic coloration.
Which is not true of the cytoplasmic membrane?
A. It defines the boundaries of the cell. B. It is a semipermeable barrier. C. It consists mainly of a fixed, static, phospholipid bilayer. D. It uses proteins as selective gates and sensors. E. All of the choices are true.
Mottled, discolored skin pigmentation is observed in patients with tinea versicolor.
Answer the following statement true (T) or false (F)
The mitochondrial genome would be most useful for studying evolutionary relationships among which group of organisms?
A. plants (members of the kingdom Plantae) B. eukaryotes (members of the domain Eukarya) C. all organisms (members of domains Bacteria, Archaea, and Eukarya) D. whales (members of the order Cetacea) E. animals (members of the kingdom Animalia)