28. A police detective finds a speck of blood at a crime scene. He knows that there is not enough DNA in the sample for the crime lab to use directly. What is likely the first step that the crime lab will take in order to have enough DNA to work with?
A. Clone the DNA sample in bacteria
B. Do a DNA fingerprint
directly on the sample
C. Use the polymerase chain reaction on the sample
D. Use restriction enzymes to digest the sample into smaller pieces

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.

b. to discover aspects of the natural world.

hopefully i .