A variant of a trait coded for by a gene is known as ________.
a. DNA
b. an allele
c. a homozygote
d. a hybrid
Answer: b. an allele
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Which of the following influence(s) the efficiency of an antimicrobial agent?
A. temperature B. duration of exposure C. concentration of the agent D. All of the choices are correct.
Stop codons are also called ________ codons
A) nonsense B) release factor C) degeneracy D) conversion
In C3 plants, the ____ are typically closed at night and open during the daytime to allow for gas exchange
a. grana b. stomata c. cuticles d. epidermis e. spongy mesophyll
You conducted an experiment to investigate whether termites demonstrated orientation behavior. You noticed that termites were attracted to black ink after some preliminary observations. You hypothesized that termites were attracted to a chemical in black ink. which of the following setups provide best control to your hypothesis?
A. Black pen line vs. Blue pen line B. Black pen line vs. indentation made by wood stick C. Black pen line vs. blank paper D. Black pen line vs. Black pencil line