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.
1 A fossil is a preserved remnant or trace of a once living organism. 2  Fossils are typically found in sedimentary rocks. 3  Usually it is the âhard partsâ of plants and animals that are preserved e.g. wood or bones or shells, as the âsofter partsâ e.g. flesh are usually decayed (decomposed by bacteria, etc.) or eaten.