1) Heterozygosity – the content in the body cells of different genes (dominant and recessive) of a given allelic pair (Aa). The dominant gene manifests itself in the heterozygous phenotype.
2) Homozygosity – the content of identical genes of a given allelic pair by a cell (AA – homozygous for the dominant gene, aa – homozygous for the recessive gene). In a recessive homozygote, in the absence of a dominant gene, the recessive gene is phenotypically manifested.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.