What role has cultural evolution played in human success? What, if any, biological adaptations support this use of culture?
What will be an ideal response?
An answer should include a statement that indicates that cultural evolution involves learning skills, especially the ability to make items that put an individual less at the mercy of the environment, and passing on these skills to others. This has increased human range. The biological adaptations that made this possible are changes in the brain: increase in size, fewer programmed stereotypic behaviors, and more mental flexibility. As the cultural advantages become more important, humans became less muscular, and the loss of brute strength further promoted cultural development.
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What is determined by the variable domain of an antibody?
a. molecular stability b. immunological mechanism of action c. binding specificity d. immunological half-life
In a tropical forest some leaves are dark green
and some are light green. In a population of caterpillars, homozygous dominant dark green caterpillars thrive eating the green foliage; homozygous recessive light green caterpillars thrive eating light green foliage; heterozygous caterpillars of an intermediate color green are easily seen by birds and eaten, thus there frequency is far less than the dominants or recessives. This is an example of ___ selection.
a. directional b. stabilizing c. disruptive d. frequent e. mutational
__________ is a process where a concentration of nerves and sensory structures forms in the head region.
Fill in the blank(s) with the appropriate word(s).
Which of the following is capable of resetting the thermostat of the body to cause a fever?
A) complement B) pyrogen C) antigen D) perforin