Genes that are ________ on chromosomes get separated by crossing over ________ frequently
a. farther apart / less
b. farther apart / more
c. none of the choices
d. closer together / more
b
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Recombinant vaccines and inactivated vaccines typically require several shots to be effective
Indicate whether this statement is true or false.
During HIV reproduction, spike glycoproteins
A. do not enter the cell with the virus. B. are released into the cytoplasm by cellular enzymes. C. are embedded in the infected cell membrane. D. are assembled into the virus along with reverse transcriptase. E. are embedded in the viral capsid.
Amniotes differ from amphibians by ____
a. their size b. possession of lungs c. internal fertilization d. laying of eggs e. being tetrapods
An acid is a substance that donates a(n) ____
a. neutron b. antioxidant c. hydroxide ion d. electron e. proton