Genetic Dominance
Genetic dominance is an important concept in genetics which describes the effect one gene, or allele, has over another. In a given trait, the gene or allele that is expressed is called the dominant gene, while the gene or allele that is suppressed is called the recessive gene. The presence of a dominant gene in a heterozygous organism (having two different alleles) will cause only the trait associated with the dominant gene to be expressed. For example, having two different alleles for eye color in an organism will result in the dominant trait of eye color being expressed. Genetic dominance plays an important role in the inheritance of genetic traits, and can be used to predict the likelihood of certain traits being expressed in offspring.
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