Genetic experiments have revealed the relationship between the observable traits of an organism, or ________, and the genetic constitution of an organism, or ________
Fill in the blank(s) with correct word
phenotype; genotype
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Because of the high requirement for reducing power in nitrogen fixation, the nitrogenase enzyme that carries out the reaction is very sensitive to the presence of ________.
A. oxygen B. carbon dioxide C. light D. None of the choices are correct.
Assume that an organism has a haploid chromosome number of 7. There would be ________ chromosomes in a monoploid individual of that species
A) 3.5 B) 42 C) 7 D) 28 E) 14
Once you have had a primary exposure to a specific antigen and encounter this antigen again, you will mount a rapid immune response due to:
A) memory cells. B) antigen-presenting cells. C) cytotoxic T cells. D) antibodies.
A millicurie, a unit of radioactivity, is
a. a tenth of a curie. b. a hundredth of a curie. c. a thousandth of a curie. d. a millionth of a curie.