In a ________ assay, DNA extracted from a microbial community or environmental sample is incubated with selected complementary probe or sample sequences (often ________) and allowed to hybridize. The level of hybridization to each probe (gene) is measured. Analysis of DNA hybridization thus reveals the presence or absence of the specific genes in the environment. Most importantly, this can be done without ________.
What will be an ideal response?
phylochip, 16S rRNA sequences, nucleotide sequencing
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Before Darwin published his work, Lamarck and others had suggested mechanisms for evolution. By what means did Darwin propose species evolved over time?
A. Overproduction of young B. Natural selection C. Survival of the strongest D. Passing on acquired traits
Phenotypic treatments for genetic disorders include
a. preventing the disorders in the carriers. b. eliminating the defective gene. c. preventing a disorder from being passed on. d. preventing a disorder from being expressed. e. all of these.
If N(0 ) = 30 and ? = 1.20, what is the population size for year one?
A) 25 B) 28.8 C) 30 D) 36
What does it mean for an apicomplexan to have a complex life cycle?
a. require two or more hosts b. have many specialized structures c. never age d. begin with a larval stage