Best Answer: Genotype frequencies are the frequencies of the homozygous dominant (AA) heterozygous (Aa) and homozygous recessive (aa). If you're using population genetics, then they are the p^2, 2pq, and q^2 values.
Petrified fossil is an organism that has been converted into stone.  Silica, iron and copper minerals can be commonly found in petrified  fossils.
Trace fossils âº Trace fossils are signs (traces) left by an animal or plant during its life, such as fossilized footprints. Trace fossils âº Fossil folklore. Fossils do not look like normal pieces of rock. For thousands of years, people did not understand what they really were, so they came up with folk tales to explain them.