Differentiating Genotype from Phenotype

Genetics
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A gene's expression can differ between variants of the same gene. As a corollary, a gene might manifest itself in many ways in different species. The various types of DNA are referred to as alleles. A locus is a stable point on the genome where a specific gene may be identified. A diploid species receives either a replica from identical allele or one clone of two different alleles from its progenitors. If a child inherits two similar alleles at the same site, their genotype is homozygous (Rauch et al., 2017). If they have two different alleles for that location, their genotype is said to be synergistic. There are autosomal dominant and recessive alleles in the same gene. In terms of expression, a dominant autosomal allele will always outweigh a recessive allele. A person's genotype is determined by the combination of alleles they carry for a specific gene.  
In using myself as an example, I possess brown eyes which is inherited from my mother...