What factor would result in an increased mortality in a population due to increased competition for water?
A) demographic transition
B) density-dependent factor
C) density-independent factor
D) increase in carrying capacity
B
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Interpret the results to the following experiment
Transcriptional activity of chemotactic genes showed a high expression level during the following conditions: repelling away from compound 1, moving towards compound 2, and remaining sessile when presented compounds 3 and 4. A) Activity during movement in any direction led to high measurements observed, and the sessile population responded equally to both a chemoattractant and a chemorepellant but remained in the same location for their net movement. B) Gene expression by itself cannot distinguish between cells responding to both an attractant and repellent, so this ambiguity makes transcriptomics unfavorable but nonetheless indicates activity. C) The activity observed during a sessile existence suggests the molecular probe was targeting a chemotactic gene that is also involved in other non-chemotactic functions due to the activity observed. D) Transcriptomics as a whole cannot be used for chemotaxis genes because they are not regulated at the transcriptional level (i.e., they are constitutive), which is why activity is observed on all three conditions.
DTC genetic tests (select all correct choices):
A. can be purchased directly by consumers. B. involve the active intervention of medical professionals at each stage of the process, from initial submission of samples to final consultation with the consumer. C. may or may not be reliable. D. are the best way to determine whether or not an individual carries an allele associated with a specific disease. E. none of these
A gill is indicated by letter
a. A. b. B. c. C. d. D. e. E.
Aminoacyl-tRNA synthetases catalyze covalent addition of ________ ________ to tRNAs.
Fill in the blank(s) with the appropriate word(s).