Genes are precisely copied during the process of DNA replication and never undergo any change
a. True
b. False
Indicate whether the statement is true or false
False
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Examine Figure 23.2 in your textbook. The group "fish" includes all vertebrates except the tetrapods. The taxon "fish" is therefore a _____ group
A. monophyletic B. paraphyletic C. polyphyletic
During allergic reactions, what class of antibody causes mast cells and basophils to release histamine?
A) IgM B) IgE C) IgG D) IgD E) IgA
The fusion of two gametes produces a
A) zygote. B) schizont. C) chromatid. D) centromere. E) merozoite.
Which of the following choices best describes the relationship that exists between moisture and air temperature?
A. The moisture-holding capacity of air decreases as the higher altitude winds of the polar regions descend onto the continents. B. The moisture-holding capacity of air decreases when it is warm and increases when it is cool. C. The moisture-holding capacity of air remains the same (warm or cool) and is not related to its temperature. D. The moisture-holding capacity of air increases when it is warm and decreases when it is cool.