The duplication of homeotic (Hox) genes has been significant in the evolution of animals because it _____
A) permitted the evolution of novel forms
B) caused the extinction of major groups
C) reduced morphological diversity into simpler forms of life
D) allowed animals to survive on significantly fewer calories
Answer: A
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What type of gland releases its product onto an
internal or external surface?
a. endocrine b. muscular c. neural d. exocrine e. connective
Triglycerides are stored primarily in this type of tissue.
A. adipose B. cardiac C. epithelial D. nervous E. muscular
The type of chemical bond that connects the sugars and phosphates together in a DNA molecule is a
_______________ bond. Fill in the blank(s) with the appropriate word(s).
The first experimenters to use Griffith's transformation assay to identify the genetic material were:a
Meselson and Stahl. b. Watson and Crick. c. Franklin and Wilkins. d. Avery, MacLeod, and McCarty. e. Hershey and Chase.