Natural selection is best summarized as ____
a. mutation in various species
b. independent assortment of genes during meiosis
c. the difference in survival and reproduction amound members of a population
d. changes in chromosome number or structure
e. the adaptation of varying individuals to changes in the environment
ANSWER: c
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Staphlococcus aureus is a bacterium that
causes wound infections. Many strains of S. aureus now exist that have evolved resistance to the potent antibiotic, methicillin. This is an example of ____ selection.
a. directional b. stabilizing c. disruptive d. frequent e. more than one of these types of
The outcome of the joining of cytology and biochemistry yielded a better understanding of the cell by
A) identification of cellular structures. B) identification of cellular biochemical pathways. C) creating bioinformatics. D) identification of cellular structures and biochemical pathways. E) identification of biochemical pathways and creating bioinformatics.
Compared to conventional agriculture, organic farming
A) uses fewer synthetic pesticides. B) increases crop yields. C) guarantees the safety and extra health benefits of food. D) requires much less hands-on work.
Which of the following terms refers to a reversible change in the normal shape, size, and organization of tissue cells?
A) metaplasia B) metastasis C) dysplasia D) anaplasia E) inflammation