A(n) ________ life table is constructed by sampling the population to obtain a distribution of age classes during a single time period

Fill in the blank(s) with correct word


time-specific

Biology & Microbiology

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Dr. John Doe, a research microbiologist for a university medical center, has been accused of sending Bacillus anthracis, the causative agent of anthrax, through the mail to the President.  You, as a public health official with the CDC, have to determine if it is the same strain as the two strains of B. anthracis found cultured in his lab.  Which method of identification would you use to compare these three bacterial samples?  

A. Pulse-field gel electrophoresis B. Biochemical test identification C. Serological testing using agglutination D. Gram staining

Biology & Microbiology

Which of the following is the best definition of desertification?

a. a drought-like condition where rainfall is 20% less than normal for a period of over 2 years b. a conversion of grassland or woodlands to desert-like conditions c. an ecological disaster d. a process where farm animals overgraze prairie lands

Biology & Microbiology

Four of the five statements listed below provide

evidence that genes are located on chromosomes. Select the exception. a. The chromosome number is cut in half by meiosis. b. The original chromosome number is restored by fertilization. c. Some genes tend to be inherited together. d. Environmental factors may influence gene expression. e. There are two sets of chromosomes, one maternal, one paternal, in diploid forms.

Biology & Microbiology

Each species occupies a certain ecological __________, characterized by its interactions with the physical and chemical features and the other species living in it.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology