genotype differences

Question

determining if they are either heterozygous or homozygous

Answer 1

Capital letters represent dominant alleles and lower case letters represent recessive alleles. If you have either two recessive or two dominant alleles you are considered homozygous.  If you have one dominant and one recessive allele you are considered heterozygous.

Genotype	Homozygous	Heterozygous
AA	x
Aa		x
aa	x