Two copies of the same gene on a single chromosome would indicate a(n) ________ had occurred.

a. deletion
b. duplication
c. inversion
d. translocation


b. duplication

Biology & Microbiology

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Which of the following groups of species represents a guild?

A) species of birds that feed on nectar B) species of plants that use the C3 pathway of photosynthesis C) species of plants that tolerate shade D) species of plants or animals that are iteroparous

Biology & Microbiology

You are performing an experiment to assay phosphorylation of a substrate by a protein kinase. Based on the data in the table below, what do these experimental results suggest? 

A. The substrate is not required for phosphorylation. B. The substrate can undergo autophosphorylation. C. The protein kinase is required for phosphorylation. D. GTP is not required for phosphorylation.

Biology & Microbiology

Choose the statement that is TRUE.

a. Most digestion occurs in the stomach. b. Most of the fluid absorbed by the gut is absorbed by the large intestine. c. Cells in the stomach wall include muscle cells, neurons, endocrine cells, acid-secreting cells, and mucous-secreting cells. d. The liver secretes acidic bile.

Biology & Microbiology

How is enrichment bias OFTEN reduced?

a. by diluting the inoculum b. by ensuring the medium is highly buffered c. by maintaining high oxygenation d. by using ecologically relevant light intensity

Biology & Microbiology