Which are the four types of animal tissues that develop into specialized structures?
a. Nervous, muscle, connective, and epithelial
b. Nervous, transport, connective, and epithelial
c. Nervous, muscle, reproductive, and connective
d. Nervous, muscle, reproductive, and epidermal
a. Nervous, muscle, connective, and epithelial
The four tissues found in animals are nervous, muscle, connective, and epithelial. These develop into specialized structures, such as the nervous system, bones and tendons, and organs.
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In animal cells, microtubules grow from
A. the plasma membrane. B. the outer membrane of the nuclear envelope. C. centrosomes containing centrioles. D. dimerization centers located throughout the cytosol. E. the tips of the chromosomes.
What is the relationship between operators, transcription units, and operons?
a. Operators consist of transcription units and operons. b. Operons consist of transcription units and operators. c. Operators consist of multiple transcription units associated with a single operon. d. Operons consist of multiple operators associated with a single transcription unit. e. Operons consist of multiple transcription units associated with a single operator.
To identify the optimal phylogenetic tree from multiple potential trees, many systematists use the ____, which states
that the simplest plausible explanation of any phenomenon is the best.
a. maximum likelihood method b. principle of parsimony c. genetic distance method d. gradual phyletic hypothesis e. punctuated equilibrium hypothesis
Frameshift mutations may involve the
a. substitution of nucleotides. b. substitution of codons. c. substitution of amino acids. d. addition or deletion of one or more base pairs. e. rearrangement of amino acids.