You have discovered a new gene similar to an integrin. If you misexpress this gene in the wrong tissue early in development, what is a likely phenotype?
A. Defects in anterior-posterior patterning
B. Migration into the wrong area
C. Homeotic transformation
D. Apoptosis
Answer: B
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The correct sequence for the steps of meiosis I is
A) telophase-anaphase-metaphase-prophase B) 46 chromosomes, 23 chromosomes, then 46 chromosomes C) prophase-metaphase-anaphase-telophase D) anaphase-metaphase-prophase-telophase
Which of the following is a function of inhalation through the pharynx in mammals, in addition to bringing oxygen into the respiratory system?
a. cooling the body temperature b. contributing to osmotic balance via water loss c. filtering out inhaled particulate matter d. drying of the air before it reaches the lungs
Areas of the body such as the lips or fingers are represented by ____ regions and arms and legs are
represented by relatively _____ regions.
a. large; small b. small; large c. motor; sensory d. sensory; motor e. cerebellum; brain stem
DNA and RNA contain functional units known as:
A. nucleotides. B. amino acids. C. fatty acids. D. enzymes. E. peptides.