Compare the differences between the biological species concept and the morphological species concept used by
Linnaeus. What will be an ideal response?
Concepts to Consider: Linnaeus differentiated organisms based on the morphological
species concept which places organisms into taxons based upon structural features. The
biological species concept is based on the sexual reproduction and the production of viable,
fertile offspring.
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Which of the following is not a phenotypic trait of bacteria?
A. Nutrient requirements B. Biochemical reactions C. Cell shape D. rRNA sequence
Kin selection is a form of natural selection in which ____
a. dominant individuals share resources disproportionately with their close relatives b. individuals help relatives only if they are likely to return the favor in the future c. group members sacrifice their own reproductive success to help individuals who are not their direct descendants d. shared alleles for altruism are perpetuated if the assisted animals produce more offspring than the helper could have produced if he had not helped e. shared alleles for altruism are perpetuated if the helper produces more offspring than the relatives that he aids
Using the accompanying illustration and the assumption that half of a plant's sperm and eggs are p and half are P, one
can predict that the chance of sperm p meeting egg P at fertilization is ____. a. 50% b. 75% c. 25% d. ½ X ¼ e. 100-%
The two broad classes of cells in the nervous system include 1. those responsible for information processing, and 2. those providing mechanical and metabolic support.These two categories of specialized cells are called
A. microglia and Schwann cells. B. Schwann cells and glial cells. C. neurons and glial cells. D. neurons and fibrocytes. E. astrocytes and Schwann cells.