There are several concerns with using DNA profiling in forensics with the advent of cheaper synthesis methods for DNA. Propose a mechanism to determine if crime scene evidence is natural or synthetic

What will be an ideal response?


Testing evidence for methylation patterns and comparing those patterns to those seen in natural DNA samples.

Biology & Microbiology

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Are genetically modified organisms safe for humans to consume?

A. No, genetically modified organisms are not safe for humans to consume. B. We do not currently have any data on whether genetically modified organisms are safe for humans to consume. C. Yes, genetically modified organisms have been found to be extremely safe for humans to consume, and research is no longer assessing this question. D. Yes, short-term research on animals seems to indicate that genetically modified organisms are safe for humans to consume.

Biology & Microbiology

Since there is a larger concentration of potassium ions inside a neuron, why is the inside of the neuron negative (-70mV) relative to the outside?  

A.  Potassium ions carry a negative charge. B.  Negatively-charged proteins inside the cell counteract the charge of the potassium ions. C.  The negative sign is just a historical convention. D.  The high concentration of sodium ions outside the cell makes the inside negative by comparison.

Biology & Microbiology

Specialized cells that work together to perform a common function are called

A. organisms. B. organs. C. tissues. D. glands. E. membranes.

Biology & Microbiology

The transition to multicellularity:

a. has occurred once. b. is an obligate condition. c. is only in slime molds. d. must convey a selective advantage to individuals.

Biology & Microbiology