What type of rock is this? (i found it outside and it just caught my eye and it feels great having it around)

What causes darkening of the skin as melanin production increases

What tool do geneticists use to predict the outcome of genetic crosses? a. karyotype b. punnett square c. centrifuge

Protein and polypeptide sequences can be determined by first partially hydrolyzing the protein or polypeptide followed by amino acid sequencing of the fragment pieces using the chemical degradation process known as edman degradation. determine the sequence of the initial (18-amino acid) polypeptide that produces the following five partial sequences after hydrolysis and edman degradation.