Smooth muscle is found in
a. arms and legs.
b. the walls of hollow organs and tubes.
c. the heart.
d. the brain.
e. appendages only.
B
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Outline the three stages involved in the transcription of a DNA molecule
What will be an ideal response?
The genes that determine where appendages will develop on the animal’s body are called
a. ideotic genes b. homeobox c. Hox genes d. homeotic genes e. homeodomains
The stages of mitosis plus interphase are listed below with letters a
through e. Select the correct phase for each statement numbered 70–80. a. interphase b. prophase c. metaphase d. anaphase e. telophase E 70. Homologous pairs of chromosomes line up on the equatorial plate. M 71. Chromosomes replicate. M 72. Genes replicate. E 73. DNA replicates. E 74. Condensation and shortening of chromosomes occurs. E 75. Spindle fibers first appear. M 76. Centromeres break apart as the separated sister chromatids begin to move to opposite poles. E 77. The microtubular spindle develops. E 78. Sister chromatids joined at their centromeres are attached to spindle fibers. M 79. Cytokinesis occurs after this phase of mitosis. E 80. Daughter nuclear membranes form.
A modified form of cellulose found in the exoskeletons of insects and crustaceans is known as
A. glycogen B. chitin C. amylose D. starch