When heritability is 0%:
A. genes play no role in the expression of the
trait.
B. genes play a role in the expression of a
trait, but only a small one.
C. genes play a role in the expression of a
trait, but it can't be measured.
D. genes play no role in variation in the trait
among individuals.
E. genes play a role in variation in the trait
among individuals, but it cannot be
measured.
D
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Middle eastern respiratory syndrome (MERS) is caused by
A) Streptococcus pneumoniae. B) the influenza virus. C) a coronavirus. D) a rhinovirus.
Bacteriophages selectively infect bacterial cells. How might they be used as a therapeutic treatment in humans?
A. Bacteriophages can be used to genetically engineer bacterial cells making them more susceptible to drugs. B. Phages can be used to stimulate human immune cells to attack and kill bacterial cells. C. Phages can carry genes into cells which will genetically modify the host cells to prevent infection. D. Humans suffering from infections with antibiotic resistant bacteria can be treated with phages, which will infect and lyse the bacterial cells, leaving human cells unaffected.
In plants, what are embolisms?
A) toxic acids produced when stomata are closed and it's sunny
B) formations of ice crystals when a plant is subjected to below-freezing temperatures
C) hormones that result in apical dominance
D) air bubbles that form within xylem
All of the following are true regarding pedigree analysis EXCEPT that it
A) documents the transmission of a genetic characteristic over two or more generations. B) is exclusively used to study the patterns of inheritance in dogs. C) reveals whether a trait is dominant or recessive. D) can incorporate molecular biology techniques.