How do you find a genotype and a phenotype.

Well you should know about a punnet square, so anyways you have the result of the punnet square, if you have a dominant allele then the phenotype would be that allele, while the genotype is the dominant and either a recessive allele or a dominant allele. 

Bhope this : )

The basic repeating unit of nucleic acids are known as nucleotides. a nucleotide consists of three distinct chemical groups.