One of the important outcomes of gastrulation is the establishment of cell tissue layers. What would be the outcome if gastrulation failed to occur?
A. Only skin and the digestive tract would
develop.
B. Only skin would develop.
C. Only certain tissues, but not all, would
develop, and the pregnancy would be
nonviable.
D. Only skin and muscle would develop.
C
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A population of ground squirrels has an annual per capita birth rate of 0.06 and an annual per capita death rate of 0.02. Calculate an estimate of the total number of individuals added to (or lost from) a population of 1000 individuals in one year
A) 120 individuals added B) 40 individuals added C) 20 individuals added D) 400 individuals added E) 20 individuals lost
The cytoskeleton is involved in which of the following cellular responses?
A. phagocytosis B. Toll-like receptor binding C. extravasation D. phagocytosis and extravasation
You have discovered a gene that appears to be crucial to the development of the nervous system in C. elegans. Which of the following techniques would allow you to investigate the transcriptional regulation and expression of this gene in vivo?
A) DNA cloning B) restriction endonuclease mapping C) replacing one copy of the gene with a reporter gene, such as GFP or lacZ D) transcriptional activator-like effector nucleases (TALENs) targeted gene disruption E) RNAi gene knockdown
Which of the following is NOT a method to create fossils:
A. Coalification B. Carbonization C. Permineralization D,. Impression