Which taxonomic tool would scientists use if they wanted to determine if an outbreak of food poisoning was caused by a particular strain of a pathogen?
A) fluorescence in situ hybridization
B) DNA:DNA hybridization
C) multilocus sequence typing
D) fatty acid methyl ester analysis
Answer: C
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Every cell is descended from another cell. This idea is part of _____
a. evolution b. the theory of heredity c. the cell theory d. cell biology
What happened during the Cambrian explosion?
A. Animals first evolved from single-celled organisms. B. There was a large asteroid impact. C. There was a rapid diversification of animal forms. D. Many large volcanoes erupted.
What is the seed and soil theory?
a. Cancer spreading is determined by the pattern of blood flow b. Fertile environment in which compatible tumor cells could grow c. Age and gender
What is the normal complement of sex chromosomes in a human male?
A) two Y chromosomes and zero X chromosomes B) two X chromosomes and one Y chromosome C) one X chromosome and one Y chromosome D) one Y chromosome and zero X chromosomes