A chain of rod-shaped cells would be called a/an
A. streptobacillus.
B. staphylobacillus.
C. streptococcus.
D. staphylococcus.
E. palisades.
Ans: A. streptobacillus.
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Examine the flux diagrams in Figure 25.6 to address the following questions. At what rate does fossil fuel combustion contribute carbon to the atmosphere?
What will be an ideal response?
In a certain bird species, clutch size (the number of eggs laid by a female in one breeding season) ranges from four to eight, and the most frequent clutch size is six. This phenomenon is an example of
a. sexual selection. b. stabilizing selection. c. disruptive selection. d. directional selection. e. artificial selection.
Transportation-produced smog causes air to turn
a. gray. b. black. c. brown. d. red. e. blue.
The 9:3:3:1 ratio is typical of a dihybrid cross in which complete dominance and independent assortment occur. What is the dihybrid ratio with independent assortment of polygenes?
What will be an ideal response?