Which form of communication is used by social insects to modify the behavior of the colony?
A. auditory communication
B. chemical communication
C. visual communication
D. None of the choices are used by social insects.
E. All of the choices are used by social insects.
Answer: B
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Cells of complex multicellular organisms often differ in function. Which of the following describes the molecular mechanism that gives rise to different cell types?
A. Cells lose a portion of their genome as they become specialized. B. Cells acquire mutations during the process of differentiation. C. Different cells express different sets of genes. D. Tissues migrate during embryonic development.
Which of the following is NOT a principle used when constructing cladograms?
A. All species or higher taxa are placed on tips in a phylogenetic tree. B. All species or higher taxa are placed on nodes in a phylogenetic tree. C. Each cladogram branch point should have one or more shared derived characters that are common to all species above the branch point, unless the character is later modified. D. All shared derived characters appear together only once in a cladogram unless they arose independently during evolution more than once.
The ability of bacteria to transfer DNA from one individual to another in the same generation is called ________
a. vertical gene transfer b. mitosis c. meiosis d. horizontal gene transfer e. binary fission
Match the definition with the term it is describing.
Transformation A) Taking up plasmid DNA from the environment B) Plasmid containing genes from different organisms C) Cell capable of transformation