Under what circumstances is a metagenomic analysis preferable to analysis of a gene or genes from a single species?
What will be an ideal response?
Metagenomic analyses are preferred when you are interested in studying the diversity in a given environment, and they enable researchers to look for sequences found in organisms that make up a small part of a biotic community. Analysis of a gene from a single species is helpful when you wish to study the role of that specific gene, but does not provide insight into genetic diversity or homologous genes in other species.
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Examine the digestive system structures in the figure above. The highest rate of nutrient absorption occurs at location_____
A) 1 B) 2 C) 4 D) 5 E) 8
The cellular fragments in the blood that function in blood clotting are
(a) erythrocytes. (b) leukocytes. (c) platelets. (d) none of the above.
A positive pyrrolidonyl arylamidase (PYR) test was observed on a species of Enterococcus. What color should be observed for this reaction?
a. Purple b. Red c. Green d. Pink
Fatty acid tails
What will be an ideal response?