In highly integrated insect societies,
a. natural selection favors individual
behaviors that lead to greater diversity
among members of the society.
b. there is scarcely any division of labor.
c. cooperative behavior predominates.
d. patterns of behavior are flexible, and
learned behavior predominates.
e. all of these are true
C
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Having paired structures so that the right and left halves are mirror images is referred to as:
1.bilateral symmetry 2.cephalization 3.coelomate 4.pseudocoelomate
Proteomics is made complicated by the fact that:a
gene therapy is in its infancy. b. DNA sequencing requires powerful computers. c. the response to a drug varies with the individual. d. certain genes encode several different proteins. e. cells of different tissues contain the same kinds of proteins.
If the formation of the endoderm does not take place in an embryo, yet the embryo, for whatever reason, continues to develop, which of the following structures will NOT develop?
A) Skin B) Nervous system C) Heart D) Kidneys E) Stomach
Answer the following questions true (T) or false (F)
1. An antigen may consist of multiple epitopes, each of which recognized by different lymphocytes. 2. Allorecognition occurs when B and T cells are screened for self-tolerance. 3. Graft-versus-host disease occurs when transplanted bone marrow gives rise to B and T cells that attack the recipient's tissues.