A ________ group does not contain the most recent common ancestor.
Fill in the blank(s) with the appropriate word(s).
polyphyletic
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Protein filaments with a diameter of about 10 nm that are major components of the cytoskeleton are called
A. mycelia. B. microfilaments. C. microtubules. D. intermediate filaments.
Some of the work with Hawaiian fruit flies illustrated the presence of a
a. prezygotic isolating mechanism, which involved behavioral isolation. b. prezygotic isolating mechanism, which involved gametic isolation. c. prezygotic isolating mechanism, which involved temporal isolation. d. postzygotic isolating mechanism, which involved behavioral isolation. e. postzygotic isolating mechanism, which involved gametic isolation.
In most eumetazoans the innermost tissue layer during development is the
a. mesoderm. b. epiderm. c. mesoglea. d. endoderm. e. ectoderm.
In most eumetazoans the outermost tissue layer during development is the
a. mesoderm. b. epiderm. c. mesoglea. d. endoderm. e. ectoderm.