Antennapedia in Drosophila is an example of a _________
A. Loss-of-function mutation
B. Gain-of-function mutation
C. Zygotic mutation
D. Segmentation mutation
B
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A compound is two or more different kinds of atoms bonded together.
Indicate whether the statement is true or false. A. True B. False
Prokaryotes
a. have nucleoid regions. b. are unicellular. c. may have cell walls. d. are either bacteria or archaeans. e. are or have all of these
Typically species compete for
A) food. B) space. C) essential nutrients. D) multiple resources simultaneously.
A student in a histology class was asked to describe the structure of a stratified squamous epithelium. Which one of the following is the best description?
A) tissue composed of protein fibers in a ground substance and a few cells B) tissue composed of one layer of flat cells located on a basement membrane C) tissue composed of contracting protein fibers enclosed by plasma membranes D) tissue composed of several layers of tall cells resting on a basement membrane E) tissue composed of several layers of flat cells resting on a basement membrane