Systematists often use DNA sequencing in ________, the study of the order of evolutionary events within a group sharing derived characters.
Fill in the blank(s) with the appropriate word(s).
cladistics
Biology & Microbiology
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The evolution of prezygotic barriers to reproduction after postzygotic barriers already exist is called ____
a. species fusion b. reinforcement c. adaptive radiation d. geographic isolation e. hybridization
Biology & Microbiology
Herbaceous vegetation such as reeds, sedges, grasses, and cattails typically grow in freshwater
A) marshes. B) swamps. C) riparian woodlands. D) peatlands or mires.
Biology & Microbiology
Gas exchange in terrestrial insects is accomplished through:a
the use of gills. b. the use of tracheae. c. the use of book lungs. d. a closed circulatory system. e. diffusion across the epidermal layer.
Biology & Microbiology
Identify the nonlipid molecule.
A. glycogen B. triglycerides C. phospholipids D. steroids E. cholesterol
Biology & Microbiology