How many different types of gametes can be produced by an individual with genotype AaBBCcDdEe, if all five genes are on different chromosomes?
A) 4
B) 5
C) 10
D) 16
E) 25
Answer: D
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Water is able to cross plant plasma membranes by a combination of
A. diffusion and phloem. B. root pressure and turgidity. C. transpiration and Casparian strips. D. osmosis and aquaporins. E. evaporation and diffusion.
An immunoassay was developed to rapidly diagnose patients infected with an emerging virus. However, the researchers discovered that some individuals were producing false negatives when tested, despite being infected with the virus. What might explain this?
A. number of genome copies carried in each virion B. rapid evolution of the viral antigen C. changes in the length of the viral DNA D. changes in the antibody produced by the virus
The strongest chemical bonds are
A. hydrogen bonds. B. Van der Waal forces. C. hydrophobic interactions. D. ionic bonds. E. covalent bonds.
Exchange of genetic material in ciliates is known as
A. macronucleosis B. micronucleosis C. conjugation D. panmixis E. myxomycetosis