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.
Forest Fossils: Exploring Americaâs Petrified Forests. By Lindsay Seventko, American Forests When thinking about our forests, thoughts of rich earth, lush foliage and intriguing wildlife typically come to mind. But, any true forest lover should, at least once, visit a forest that isnât alive at all [â¦] Read More.