Which of the following statements does not present a reason that Drosophila melanogaster is a
suitable research subject for developmental genetics studies?
a. An abundance of developmental genes is available for study.
b. An abundance of mutants is available for study.
c. A new mutation can be mapped on the chromosome relatively easily.
d. Flies can be easily grown in the laboratory setting.
e. The control of fly development is unique and unrelated to human development
E
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Indicate whether this statement is true or false.
Air passage into the trachea of most insects is controlled by the closing and opening of valves, which operate special openings called
A. spiracles. B. ocelli. C. ommatidia. D. book lungs. E. Malpighian tubules.
Sixteen-year-old Rhapsody has just learned that her younger brother Clyde is colorblind. Although she knows she has color vision because her cat, Juice, is clearly orange, and she reads that nearly all people with colorblindness are boys, she is concerned about her own sons one day. If she is a carrier for colorblindness, then the risk that a son of hers is colorblind is
A) dependent on the genes the child's father contributes. B) 1/8. C) 1/4. D) 1/2.
What type of tissue is blood?
a. epithelial b. muscular c. connective d. adipose e. noncellular fluid