The sharp reduction of the gene pool and the numbers of a population through a severe epidemic is an example of ____.
A. natural selection
B. genetic isolation
C. the bottleneck effect
D. the founder effect
E. the wild card effect
Answer: C
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Consider a biochemical pathway with five steps that lead to the production of product Q. If there is an abundance of product Q, the most efficient way to slow down the entire pathway would be to regulate ________.
A. the last enzyme in the pathway B. every enzyme in the pathway C. the first enzyme in the pathway
Symbionts such as Aeromonas veronii of leeches and Buchnera symbionts of insects are transmitted ________ to ensure the safe transfer of the symbiont to the next host generation
A) vertically to offspring B) horizontally through infected water C) horizontally through infected secondary hosts D) vertically through the air
Please study the table below. Each pair of phrases in the same row shows a valid comparison between the anterior and posterior pituitary EXCEPT: Response ANTERIOR PITUITARY POSTERIOR PITUITARY
a secretion is stimulated by hypothalamic releasing hormones site of release for hypothalamic neurohormones b hypothalamic-pituitary circulatory system long hypothalamic axons c cortex produces glucocorticoids medulla produces epinephrine d produces hormones that stimulate milk production produces hormones that stimulate milk ejection (release) What will be an ideal response?
Which of the following traits was not studied by Mendel?
A. Flower color B. Seed color C. Pod color D. Pollen color E. Plant height