What could be achieved by dna profiling using gel electrophoresis?
a. the chromosome number of an organism could be counted.
b. it could be shown that human tissue found at the site of a crime did not come from a person suspected of having committed the crime.
c. a karyotype could be produced.
d. extinct species of living organisms could be brought back to life.

Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas

Match each phylum or class to its correct characteristic

When sodium chloride dissolves in water the sodium cholride dissociates into?