The answer is A .
PCR stands for Polymerase Chain Reaction. It is a method to analyze a short sequence of DNA or RNA and is used to reproduce (amplify) selected sections of the nucleic acid. Untold numbers of copies can be made of the DNA in just a few hours.
PCR amplifies the regions of DNA that it targets and can therefore be used to analyze extremely small amounts of sample. This is often critical for forensic analysis, when only a trace amount of DNA is available as evidence.
the arrow will point upwards because the active transport is the transport against concentration (from low concentration to high concentration) gradient with the help of energy derived from ATP
The fox population would most likely decrease over time. The fox's population would go way down if they ate dead mouse consumed by the infection and caught the infection themselves.
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Brainliest answer is always appreciated!<span />
