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.
(ËpÉtrÉªfaÉªd) adj. 1. stunned or dazed with horror, fear, etc: I've always been petrified of the dark.. 2. (Geological Science) geology (of organic material) converted into a fossilized form by impregnation with dissolved minerals so that the original appearance is preserved.