HOMOZYGOUS RECESSIVE: Dominant - Round Face Recessive - Square
Face Options:
1: Genotype: AA
2: Genotype: Aa
3: Genotype: aa
4: Phenotype: Round Face
5: Phenotype: Square Face Chose all that apply

search in internet u can get it

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."