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.
Definition of fossil. 1  1 : preserved from a past geologic age fossil plants fossil water in an underground reservoir. 2  2 : being or resembling a fossil. 3  3 : of or relating to fossil fuel fossil energy sources.