The part of the Drosophila zygote with high bicoid concentration will
A. become the anterior region of the embryo.
B. become the segments that will have legs.
C. become the segment that will have wings.
D. become the region of the embryo that has a spiracle.
E. become the tail region of the embryo.
Answer: A
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Molecular paleontology _____
A. studies the morphology of extinct species B. studies the DNA of extinct species C. cannot use rRNA
Leaching is caused by
a. bacterial action. b. wind. c. water. d. microbial activity. e. none of these.
Three types of nitrogenous wastes formed from the breakdown of protein are pictured in the diagram. 
a- Explain the relationship of the water needed to excrete the wastes and the energy required to produce the wastes.b- How is the energy needed to produce the waste and the water needed to eliminate the waste related to the nature of each waste product?c- Tell what types of organism produce each type of waste.
What will be an ideal response?
Both capsules and endospores..
a. are created in harsh conditions b. are a method of protection c. look like a halo d. are stained green