Simberloff and Wilson carried out a famous experiment to study the recolonization by arthropods of small mangrove by islands after the islands were fumigated. One of their findings was
A. several species of birds were facilitators of recolonization.
B. species turnover was high following recolonization.
C. recolonization was identical on all of the islands regardless of size.
D. species richness changes little following recolonization.
E. high diversity relative to the mainland.
D. species richness changes little following recolonization.
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The three-base sequence of DNA codes for
a. one protein. b. one strand of mRNA. c. one amino acid. d. one polypeptide. e. one strand of tRNA.
The defense response against a mismatched transfusion is called ____
a. precipitation b. immunization c. agglutination d. ABO typing e. transfusion allergy
An inducible operon is usually controlled by:
a. an inducer molecule that keeps it in the "off" state. b. an active repressor that keeps it in the "off" state. c. being active at all times. d. allolactose. e. being turned "off," usually by the end product of the pathway
Answer the following questions true (T) or false (F)
1. Sponges were the earliest animals to evolve true tissues. 2. Asymmetry refers to arrangement of body parts evenly around a central point. 3. Platyhelminthes is the first phylum to possess a coelom.